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Hiba went for a drive in her new car. She drove for 142.5 miles at a speed of 57 mph. For how many hours did she drive?Reggie opened a savings account and deposited 200.00. The account earns 10% interest, compounded annually. If he wants to use the money to buy a new bicycle in 3 years, how much will he be able to spend on the bike?What is the volume of a sphere with a bán kính of 6.7 m, rounded to the nearest tenth of a cubic meter?The bán kính of a circle is 8 cm. Find its area to the nearest whole number.Fred is 4 years older than Barney. Five years ago the sum of their ages was 48.How old are they now?