Question

The formula h = 120t - 16t$^{2}$ gives the height h in feet of an object t seconds after it is shot upward from Earth’s surface with an initial velocity of 120 ft per second. What will be the height of the object after 6 seconds?

Answer 1

Answer:

C

Step-by-step explanation:

So we have the function:

$h(t)=120t-16t^2$

Where h(t) measures the height after t seconds.

To find the height of the object after 6 seconds, substitute 6 for t. So:

$h(t)=120(6)-16(6)^2$

Evaluate. Square:

$h(t)=120(6)-16(36)$

Multiply:

$h(6)=720-576$

Subtract:

$h(6)=144$

So, the height after six seconds of the object is 144 ft.

Our answer is C.