If you answer these 2 questions then u like anime and i send u some pics! :)

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?

In need of in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?