Solve the equation.

–18 + 3x = –6

–2

–8

–18

4

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Which expression is equal to (f+g)(x)?

How many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.) how many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.)