Pls give the answers

Step-by-step explanation:

ohhh this is easyyy its

i think is 3 and 6. this took me 10 min to think.hope to and hope that my answer is brainliest.(follow me )

f(x) has value 150 at x= 0

and 0 at x= 3

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