Question

Please help this is mainly on fuctions​

Answer 1

B and C

Explanation:

We are going to look at each choice:

Let's look at choice A.

f(5)=1

f(5) means look at function f and then see which piece contains x=5.

5>1 so we are looking at
`x^2` for x=5 which gives you
`5^2=25`, this is not 1.

The answer is not A.

Let's look at choice B.

f(2)=4

f(2) means look at function f and then see which piece contains x=2.

2>1 so we are looking at
`x^2` for x=2 which gives you
`2^2=4`, so this is true that f(2)=4.

Let's look at choice C.

f(1)=5

f(1) means look at function f and then see which piece contains x=1.

1=1 which means we are using
`5` for x=1, so f(1)=5 which is what choice C says so choice C is true.

Let's look at choice D.

f(-2)=4

f(-2) means look at function f and then see which piece contains x=-2

-2<1 so we use
`2x` for x=-2, so we get 2(-2)=-4 which is not 4 so f(-2)=4 is not true.