Question

Can you help me with part C? Please

Answer 1

Answer: -40

Explanation:

Rate of change is calculated as the slope. The formula for Slope is:

S =
`(x_(1)-x_(2) )/( y_(1)-y_(2))`

The two points we have are when x = 3 and 6.

the points are (3, 120) and (6, 0), as we can see.

plugging into the slope formula:

S =
`(120-0 )/( 3-6)`

S = 120/-3

S = -40

Which hopefully makes sense, because the slope is negative, (the graph is falling).