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Oxana [17]
3 years ago
15

If f(x)=5x+1 and g(x)=2f(x)+5 then g(-1)=

Mathematics
1 answer:
ollegr [7]3 years ago
4 0
We know f(x)=5x+1. Plug in f(x) in the g(x) function.
We get g(x)=2(5x+1)+5 Distribute the 2 to 5x and 1.
g(x)=10x+2+5
Simplify to get g(x)=10x+7
Now, we plug in -1 for x.
g(-1)=10(-1)+7
g(-1)=-10+7
g(-1)=-3 
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