Question

it’s hard to see but y axis is height in feet and x axis is time in seconds anyways I need help with #21

Answer 1

Q.21:

We are asked what f(3) = 32 means?

In Q.20, we are given the following function

`f(x)=-2x^2+50`

Where f(x) is the height (in feet) of the apple and x is the time in seconds.

If we substittute x = 3 seconds into the function, we get the corresponding height of the apple.

`\begin{gathered} f(3)=-2(3)^2+50 \\ f(3)=-2(9)+50 \\ f(3)=-18+50 \\ f(3)=32 \end{gathered}`

As you can see, the height of the apple is 32 feet at 3 seconds.

Therefore, the correct answer is the option (B)

The height of the apple at 3 seconds is 32 feet.