The expression of g(x) is g(x) = (1/5)(-3x + 3) so that f(x)=5x + 7 and f(g(x))=-3x +10.
An equation is an expression that shows the relationship between two or more variables and numbers.
Given that f(x)=5x + 7 and f(g(x))=-3x +10. Hence:
5(g(x)) + 7 = -3x + 10
5g(x) = -3x + 3
g(x) = (1/5)(-3x + 3)
The expression of g(x) is g(x) = (1/5)(-3x + 3) so that f(x)=5x + 7 and f(g(x))=-3x +10.
Find out more on equation at: https://brainly.com/question/2972832