Simplify using the distributive property. 5x + 3(x + 7) = 11 - (2x + 5)

8 x + 7 = 16 - 2 x
8 x + 21 = 6 - 2 x
6 x + 2 = 17 - 2 x

1. what is the phythaforean theorem? 2.what do we use it for? 1.what is the distance formula ? 2.what do we use it for?

Ithink i know it but i want to be sure so can you me out ?

Ellie spent $88.79 at the computer stote. she had $44.50 left to buy a cool hat. how much money did she originally have? write and solve an equation to answer the question.