Find a. Round to the nearest tenth:

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?

Solve the system of equations using the linear combination method. {4x−3y=127x−3y=3 enter your answers in the boxes.