dear expert plz solve this 3 questions i humble request i have no credit remaining because of lockdown chorona crisis. plz request yiu to solve step by step 3 question i know chagg allow only 1 question..bt plz i request

1. Suppose you save $1,000 per year at the beginning of each year for 15 years and earn 7.49% interest per year. How much will you have at the end of 15 years? 2. Suppose you save $1,000 per year at the beginning of each year for 3 years and earn 5% interest per year. What is the present value of this annuity 3. Suppose you save $500 per year at the end of each year for 15 years and earn 8.25% interest per year. What is the present value of this annuity