What is your favorite color or song ?

Evaluate the expression for the given value of the variable 7a - 4a for a =8

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

At the county fair, the baxter family bought 6 hot dogs and 4 juice drinks for $12.90. the farley family bought 3 hot dogs and 4 juice drinks for $8.55. find the price of a hot dog and the price of a juice drink.