If the sum of simple interest and compound interest at the rate of 8% per annum for 2 years is rupees 816. Find the principal.​

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.

The acceleration of an object due to gravity is 32 feet per second squared.what is acceleration due to gravity in inches per second squared?

Find the domain and range of the following function f(x) = 51x - 21+ 4