Sum of -10°C,24°C,-12°C,8°C,-1°C​

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.

Solve the formula ax+ by = c for x.

Determine domain and range, largest open interval, and intervals which function is continuous.