Question

Help with these too, please!!
Need 25 and 26

Answer 1

Explanation:

Hey there!

25). Ans;

It is a function. [ many to one function].

26).Ans; Put all values of "x" in (2x^2+7).

a. f(x) = -2

`f( - 2)= 2 * { (- 2)}^(2) + 7`

So, f(-2)= 15

b. f(x)= -1.

`f( - 1) = 2 * ( { - 1)}^(2) + 7`

So, f(-1)= 9

c. f(x)= 0

`f(0) = 2 * ( {0)}^(2) + 7`

So, f(0)= 7

d. f(x)= 1

`f(1) = 2 * {(1)}^(2) + 7`

So, f(1)= 9

e. f(x)= 2

`f(2) = 2 * {(2)}^(2) + 7`

So, f(2)= 15

f. f(x)= 3.

`f(3) = 2 * {(3)}^(2) + 7`

So, f(3)= 25.

Hope it helps...

Answer 2

25. Yes, it is a function, because none of the x outputs are repeating