Evaluate: 5². Explain how you found your answer.

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Which part of a 2-column proof is the hypothesis of the conjecture? a) given b) reasons c) prove d) statements ! i think it's b but i'm not quite