Urgent, please correct answers with work

Question 1

Dru plans to invest 7,900 dollars in 6 years and 5,800 dollars in 5 year(s).He expects to earn 4.17 percent per year.How much money does Dru expect to have in 10 years?

Question 2

Steph plans to invest 8,400 dollars in 4 years and X in 3 year(s).She expects to earn 7.46 percent per year.What is X if Steph expects to have 26,400 dollars in 9 years?

Question 3

Piotr plans to make regular savings contributions of 8,300 dollars per year for 7 years.His first regular savings contribution is expected in 1 year.In addition, he plans to make a special savings contribution of 11,800 dollars in 3 years.Piotr expects to earn 17.65 percent per year.How much money does Piotr expect to have in 7 years?