Y=–3x 6y=9what is the solution to the system of equations?

Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?

Find the domain and range of the following function f(x) = 51x - 21+ 4

If a runner who runs at a constant speed of p miles per hour runs a mile in exactly p minutes what is the integer closest to the value p