Please answer the question displayed in the attached file. I'm desperate because my mom won't let me play hockey ever again if i don't get this question answered.

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.

Determine if the equation defines y as a function of x: 2xy = 1. yes o no

Solve the equation for b: a= (1/2)(b)(h)