Explain the answer and help to get the answer pleasee!!

2x + 1 < 5 solve the following inequality. then place the correct number in the box provided.

Suppose your school costs for this term were $4900 and financial aid covered 3/4 of that amount. how much did financial aid cover? and how much do you still have to pay?

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')