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Sirnot Ett
Sirnot Ett asked in Education & ReferenceHomework Help · 1 decade ago

How do you solve f (-3 ) + h (2) ?

How do you solve f (-3 ) + h (2) if f(x)=4x-3 and h(x)=-5x+7 ? I just got stumped :(

Update:

UPDATE:

So by following the first reply answer I did

f(-3) = 4*(-3)-3, which equals f(-3) = -15

AND

h(2) = -5*2+7 which equals h(2) = 3

Then I added -15 + 3 and got -12, which I presume is my answer.

Is this correct?

Update 2:

Oops, I mean -5*2+7 which equals h(2) = -3

Added -15 + -3 equals -18.

3 Answers

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  • Anonymous
    1 decade ago
    Favorite Answer

    plug in x= -3 in the f(x) function and x=2 in the h(x) function.

    so,

    f(-3) + h(2) = 4(-3) - 3 + [ (-5 x 2) + 7 ] = -12 -3 - 10 +7 = -18

    UPDATE : You are not right follow my answer or answer 3 below.

    UPDATE 2 : Yes you are correct this time.

    Source(s): B.S in Mathematics
  • PatsLax39
    1 decade ago

    f(-3)= 4(-3) -3 so thats -15

    h(2)= -5(2)+7 so thats -3

    -15+-3= -18

    im prettysure thats how you do it

  • Orc
    Lv 4
    1 decade ago

    plug -3 for the values of x on f(x) and plug 2 for the values of x on h(x), then solve the two equations and add them

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