* 4. What is the surface area of the triangular prism? 15 ft 15 ft 9 ft 40 ft 24 ft​

both equations and proportions are better.

f(x) has value 150 at x= 0

and 0 at x= 3

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

3

step-by-step explanation:

because where the point where the 2 lines intersect is (3,-1) the x value is 3