Please explain how to solve 3rd and 1st question in detail

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Question 3 of 6 Christine invested $12,000 into a fund earning 7.75% compounded monthly. She plans to withdraw $750 from the fund at the end of every quarter. If the first annuity withdrawal is to be made 3 years from now, how long will it take for the fund to be depleted? 6 years 7 months 7 Express the answer in years and months, rounded to the next period Question 1 of 6 How much would a business have to invest in a high-growth fund to receive $18,000 every month for 7 years, receiving the first payment 3 years from now? The investment 3 earns interest at 5.50% compounded monthly. $ $1,062,477.10 x Round to the nearest cent