(12+13)(-2)

Anyone know how to do this?

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

Can someone me with this graph problem by the way i need to know the answers by today since this assignment is due ! !