Subtracting 3xy2 from 8xy2 gives the same result as the expression

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10

Use the distributive law to multiply. 3(4x + 5y + 6)

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