ANSWER FAST PLEASE identifying difrent slopes consider the line that passes through each pair of given points and decide what type of slope the line was

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u

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?

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.