solve these two and i will leave a like and upvote

Regional Postal Service is considering the purchase of a new sorting machine today. The machine's supplier offers an installment payment method, which requires quarterly payments of $30,000 for 4 years at 6 percent annual interest. What is the purchase price of the equipment? None of the answers is correct O $629,925.66 O $423,937.92 O $303,176.86 $115,631.54 Sheldon owes $3,000 on his credit card. He is not charging any additional purchases because he wants to pay this debt in full. The card has an APR of 18.8 percent. How long will it take Sheldon to pay off his balance if he makes monthly payments of $70? None of the answers is correct Approximately 6 years O 92.8 months 71.6 years Approximately 4 years