Chapter 8.7, Problem 47SR

To determine

To calculate: To find the constant rate of change for the linear function in the table and interpret its meaning

Answer to Problem 47SR

Constant rate is $2.8$

Explanation of Solution

Given information: Function table is

Amount of Birdseed (lb)	Total cost ($)
x	y
4	11.20
8	22.40
12	33.60

Calculation:

Function table is given as follows:

Amount of Birdseed (lb)	Total cost ($)
x	y
4	11.20
8	22.40
12	33.60

Constant rate is calculated as follows:

  $\begin{array}{l}Rate=\frac{22.40-11.20}{8-4}\\ Rate=\frac{11.20}{4}\\ Rate=2.8\end{array}$

Hence, rate is $2.8$