Pls this is timed thank you

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

You have 6 dollars +12 pennies +to quarters + 4 dimes=2 nickels how much do you have

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2