Question

If h(x) = -4x - 10, find h(-5).

A. -30
B. 1.25
C. 10
D. -1

Answer 1

what do u think

Answer 2

B? 1.25?

Answer 3

one method is process of elimation

Answer 4

So I have: \(\color{#000000 }{ \displaystyle h(x)=-4x-10 }\)

What does that tell me?
This function tells me, that for any number "x" that I input into the function, to product the output, I will multiply that number times -4 and subtract ten from the result.

So, for example if I need to find the output when x=4, (or f(4)), then I would plug in 4 directly into the function h(x), instead of x.

\(\color{#000000 }{ \displaystyle h(2)=-4\cdot 2-10=-8-10=-18 }\)

Answer 5

ok so use that in and equation

Answer 6

Is it B?

Answer 7

h(x)=-4x-10, and h(-5)

let be the -5 is the x

h(x)=-4(-5)-10
h(x)=20-10
h(x)=10

so the answer is letter C. 10