4.3+Calculating+Costs+and+Profits++10-11

Ani Lee 9/28/10 Block: B

** 4.3 and Follow-up ** Observation and description of changes in the world around us are the first steps in finding and learning about patterns. ** · **** Time x Rate = Distance or T x R = D ** ** · **** Constant= Number in front of variable ** ** · **** Expression: No =, x, /, - and more. ** ** · **** Equation: Has an x, /, -, = and more. ** ** · **** If there is no sign we assume it is multiplication. **
 * Big Idea: **
 * Essential Question: **
 * How can I use graphs, tables and symbols to solve problems? **
 * Notes from class: **
 * Vocabulary: **
 * Equation: **** A rule containing variable that represents a mathematical relationship. An example is the formula for finding area of a circle: **
 * A= (pie) r2 **


 * 4.3 **


 * A.** Write an equation for the rule to calculate each of the following costs for any number, //n//, of customers.


 * 1.** bike rental **2.** Food and camp costs **3.** Van rental

1. 1.BRC= 30 x n 2. FCC= 125 x n  3. VR= 700

TC= (30 x n) + (125 x n) + 700
 * B.** Write an equation for the rule to determine the //total// //cost// for any number, //n//, of customers.

P= (350 x n) – (30 x n + 125 x n + 700)
 * C. ** Write an equation for rule to determine the profit for any number, n, of customers.

1. A   2. B    3. A
 * Follow-up: **