For which pairs of functions is (fog)(x)=x? a) f(x)=x^2 and g(x)=1/x b) f(x)=2/x and g(x)=2/x c) f(x)=(x-2)/3 and g(x)=2-3x d) f(x)=(1/2)x+2

Big boi and travis scott are performing at the super bowl. travis scott is 62 years younger than twice big boi’s age. the sum of their ages is 70 years old. use b to represent big boi’s age. write and solve an equation.

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"

Use the elimination method to solve the systems of equations. choose the correct ordered pair. 7x+4y=39