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a_sh-v [17]
3 years ago
12

I Need Help with my homework. It’s due tomorrow and i don’t know anything about algebra

Mathematics
2 answers:
Arlecino [84]3 years ago
7 0
The number in the parenthesis will be your x value so you can just plug them in the equation given to you and solve.

In number 1, g(x) = -5x + 2. 1a gives you g(-1). That -1 inside that g(-1) will be your x.
g(-1) = -5(-1) + 2
g(-1) = 5 + 2
g(-1) = 7

For 1b, you have g(-2) so you plug -2 everywhere the x is.
g(-2) = -5(-2) + 2
g(-2) = 12

For 3a, you have a different equation: x^2 + 4x - 1 and you have g(-4). Not a problem though just plug -4 into all the places x is at and solve.
g(-4) = -4^2 + 4(-4) - 1
= 16 - 16 - 1
= -1

Hope this helped
kow [346]3 years ago
5 0
Simply plug a in for x where f(a) means x=a
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