Wilma is twice as old as jamal, and jamal is 3 years older than tim. the sum of all their ages is 17.

Which of the following system of equation is not equal to the system of equations is not equal to the system of equations shown below

Let r = 3. what is the value of r + 58?

Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?