Question

Anyone know how to do 5c???? Please help!!!!!

Answer 1

71° F

Explanation:

Consider the rational part of f(t)

`(40t^3)/(t^3+100)` ( divide numerator and denominator by t³

=
`(40)/(1+(100)/(t^3) )`

As t → infinity then
`(100)/(t^3)` → 0 , the expression simplifies to

`(40)/(1+0)` =
`(40)/(1)` = 40

Thus after driving for a long time

f(t) = 31 + 40 = 71° F