What is the percent of decrease from 65 to 0?

Answer

100%

Explanation

To get from 65 to 0, you subtract 65.

65 is 100% of 65, so there is a 100% decrease.

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50