Can someone help me I will give extra points

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.

Which of the following is an example of a rational number? a. π b. √ 9 c. √ 8 d. 3.8362319

Identify the percent of change as an increase or a decrease. 75 people to 25 people response - correct increase decrease question 2 find the percent of change. round to the nearest tenth of a percent.