Let f(x)=-x-5 and g(x)=2x+3. Find the indicated value: x when g(x)=1

asked Dec 15, 2022 136k views

5 votes

Let f(x)=-x-5 and g(x)=2x+3. Find the indicated value:
x when g(x)=1

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2 votes

g(x)=1 <=> 2x+3=1 <=> 2x=1-3=-2 <=> x= -1
=> f(-1)= -(-1)-5=1-5=-4

Grandpa answered Dec 16, 2022

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4 votes

g(x)=2x+3 and g(x)=1 so 2(1)+3 which equals 5 you don’t need f(x) because you don’t have an x value

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