Question

Let g(x)=5x-2 and h(x)=x^2+1. Find the value of the expression.

(h o g)(-1)

Answer 1

@phi @welshfella

Answer 2

the (h o g)(-1)
means first do g(-1)
then put that number into h

if you replace x with -1, what is 5x-2 ?

Answer 3

-7!

Answer 4

first, in
g(x) = 5*x-2
put in -1
you get
5*-1 - 2
which is -5 - 2
or -7

yes -7

Answer 5

now do
h(-7)

that means put -7 in for x in x^2 + 1
what do you get ?

Answer 6

-48?

Answer 7

what is -7 * -7 ?

Answer 8

49+1=50?

Answer 9

yes, the answer is 50

Answer 10

Thank you!(:

Answer 11

yw