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seven times the sum of a number and 20 is at least-28Richard opened a savings account 8 years ago. The account earns 4% interest, compounded quarterly. If the current balance is 100.00, how much did he deposit initially?Ruben opened a savings account and deposited 200.00. The account earns 7% interest, compounded monthly. If he wants to use the money to buy a new bicycle in 2 years, how much money will he havea basketball set that sold for \$79 is discounted 15% what is the sale price?Dylan has a loyalty card good for a 20% discount at his local pharmacy. What would his total in dollars and cents be, after the discount and before tax, if the total cost of all the items he wants to buy is 30.70? Round to the nearest cent.