Answer:
Its A
Step-by-step explanation:
Answer:
576
Step-by-step explanation:
Whenever you are solving these types of problems, you just put the value given in place of x. For this equation you would have done f(48)=-3·4(48)
Estimate to nearest hundreds is 600
Estimate to nearest tens is 610 or 520
It's easier to write if you convert 1/4 into 0.25.

Then you use algebra to find that he ran the mile in 6.4 minutes.