Mikaly bought five skirts at $x each. three of the five skirts came with a matching top for an additional $9 each. write and simplify an expression that represents the total cost of her purchase

Divide. reduce the answer to lowest terms.5 2/3 ÷ 3 1/9

Dean and karlene get paid to write songs. dean is paid a one-time fee of $20 plus $80 per day. karlene is paid a one-time fee of $25 plus $100 per day. write an expression to represent how much a producer will pay to hire both to work the same number of days on a song.

Prove that 16^4-2^13-4^5 is divisible by 11.