Work out the equation of the line which has a gradient of 2 and passes through the point (1,4)

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?

Need this asap if anyone can i would be very grateful. if you could show workings that would really

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have