A chef uses 4.5 cups of tomatoes to make each batch of pasta sauce if t represents the number of cups of sauce, which equation models this situation?

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?

Solve the inequality and graph 6j - 7 < 5

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?