Question

If function f is defined by f(x)=5x+3, then which function below represents 2f(x)−3?

g(x)=10x−3


g(x)=10x+3


g(x)=10x


g(x)=3

Answer 1

g(x) = 10x

Explanation:

2 times f(x) = 5x + 3 is 10x + 3

Then (10x + 3) - 3 is 10x

I hope this helps

Answer 2

2f(x)-3= 2(5x+3)-3
=10x+6-3
=10x+3
Answer g(x)= 10x+3