Which is a solution to the equation 3x2 + 2x − 20 = 2x2 + 15?

33/2

Step-by-step explanation:

3x2+2x-20=2x2+15

6+2x-20=4+15

2x-14=19

2x=19+14

2x=33

x=33/2

f(x) has value 150 at x= 0

and 0 at x= 3

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