Question

Karma baked 48 cookies yesterday. Every hour, she bakes another batch of 12 cookies. What is the rate of change for the scenario described?

4
12
60
48

Answer 1

im gonna go with 4

Answer 2

A rate of change formula you can use is:

change in y/change in x

Step 1: Determine your "y" and "x"

First ask yourself "what are the two things that are changing?" As you can see the first thing that changes, is the amount of cookies. The second thing that changes is the amount of hours she spends baking. So in order to figure out y and x, does it make sense to talk about hours per cookies or cookies per hour?

What makes sense is cookies per hour, because it doesn't make sense to talk about how long it takes to bake one cookie.

y= cookies
x= hours

Step 2: Substitute your numbers into the equation