Use the graph of the exponential growth function f(x) = a(2x^) to determine which statement is true.

Can someone me and plz do the problem

Which of the following best describes the figure?

Diane’s bank is offering 5% interest, compounded monthly. if diane invests $10,500 and wants $20,000 when she withdrawals, how long should she keep her money in for? round to the nearest tenth of a year.