Define a variable, set up an equation, then solve. Only algebraic solutions are accepted.

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2

Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?