Question

If f(x)=10x-1, the value of f(-2) is ____?
If g(x)=-5x+13, the value of g(1) is ____?
If h(x)=x^2-x-12, the value of h(3) is ____?
please don't just give the answers I want to know how to do this!

Answer 1

I'll show you the first one

Answer 2

thank you

Answer 3

f(x) = 10x-1 right?

so f(-2) means to plug in -2 wherever you see x in the function. so what do you think it would be @JR5412 ?

Answer 4

f(-2)=10(-2)-1?

Answer 5

precisely

Answer 6

i feel like an idiot now!

Answer 7

Well don't think that way you got it now!

That's the important thing though. whenever you see x you plug in that value that you're asked to do.

Answer 8

welcome to OS

Answer 9

thank you for your help! :)

Answer 10

no problem.