MATH Please help answer all questions and show work please thank you

Chanelle deposits $7,500 into the bank. she does not withdraw or deposit money for 6 years. she earns 6% interest during that time. what will the balance be when she is finally able to withdraw her money?

In a sale there is 25% of all prices a chair costs £45 in sale how much was it before the sale

Consider the diagram. lines e and c can be described as