Solve for x.

X-6
___ =5
3

x = 21

Step-by-step explanation:

(x-6) /3 = 5

Multiply each side by 3

(x-6) /3 * 3 = 5*3

x-6 = 15

Add 6 to each side

x-6+6 = 15+6

x = 21

f(x) has value 150 at x= 0

and 0 at x= 3

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

the anwser is d) 75°

step-by-step explanation: