Question

Given f(x) = 10 -2xfind f(7). –4 3 7 56

Answer 1

The correct answer is,

f(7) -4

Explanation:

It is given that,

f(x) = 10 - 2x

To find f(7)

To find f(7) we have to put 7 instead of x in f(x).

Here f(x) = 10 - 2x,

Step 1: substitute the value x = 7 we get ,

f(7) = 10 - (2 * 7)

= 10 - 14 = -4

Therefore we get the answer f(7) = -4

The correct answer is first option.

Answer 2

Answer:
`f(7)=-4`

Explanation:

1. You have the following function given in the problem:

`f(x)=10-2x`

2. Then, to find
`f(7)` asked in the exercise, you only need to substitute
`x=7` (which is the input value) into the given function.

3. Therefore, keeping the above on mind, you obtain that
`f(7)` is:

`x=7`

`f(7)=10-2(7)`

`f(7)=10-14`

`f(7)=-4`