In march, the chang’s phone and water bills together cost $540. if the phone cost four times as much as the water, how much was the water bill? round your answer to the nearest cent.

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

Which of these tools or constructions is used to inscribe a hexagon inside a circle?

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.