What is the 2nd term when 3+2x^2-3x^4+x^3 is arranged in descending order

Which of those sequences is a geometric sequence

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?

1. find the area of the unshaded square 2. find the area of the large square 3. what is the area of the frame represented by the shaded region show