4.3+Calculating+Costs+and+Profits+0910

**27/09/09 J.H

Big Idea: Observation and description of changes in the world around us are the first steps in finding and learning about patterns.  Essential Question: How do I calculate costs and profits. **

Problem 4.3

 **A. 1. The cost for bike rental is the number of customers · $30. So it is the number of customers times 30. C=30·n 2. The cost for food and camp costs is the number of customers · $125. So it is the number of customers times 125. C=125·n 3. The cost for van rental is the number of customers · $700. So it it the number of customers times 700. C=700·n B. TC= bike rental costs + food and camp costs + van rental costs. C. P= income - total cost. So the profit is the income minus the total cost.
 * ~ Number of customers| ||~ Income| ||~ Bike rental ||~ | Food and camp costs ||~ | Van rental ||~ | Total cost ||~ | Profit ||
 * **1 ** || **$350 ** || **$30 ** || **$125 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">$700 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">$855 ** ||< **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">-$505 ** ||
 * **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">2 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">700 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">60 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">250 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">700 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1010 ** ||< **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">-310 ** ||
 * **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">3 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1050 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">90 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">375 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">700 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1165 ** ||< **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">-115 ** ||
 * **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">4 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1400 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">120 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">500 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">700 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1320 ** ||< **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">80 ** ||
 * **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">5 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1750 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">150 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">625 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">700 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1475 ** ||< **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">275 ** ||
 * **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">6 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">2100 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">180 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">750 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">700 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1630 ** ||< **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">470 ** ||
 * **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">7 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">2450 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">210 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">875 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">700 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1785 ** ||< **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">665 ** ||
 * **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">8 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">2800 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">240 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1000 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">700 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1940 ** ||< **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">860 ** ||
 * **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">9 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">3150 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">270 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1125 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">700 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">2095 ** ||< **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1055 ** ||
 * **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">10 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">3500 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">300 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1250 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">700 ** || **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">2250 ** ||< **<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1250 ** ||

4.3 Follow Up 1. (c) 2. (a) 3. (a)**