Smallest to largest 1/10, 3/10, 7/10, 9/10, 1/8, 3/8, 5/8, 7/8

5500 dollars is placed in an account with an annual interest rate of 6.5%. to the nearest tenth of a year, how long will it take for the account value to reach 19700 dollars?

100 points, hi, i’m not sure what to do here,the data doesn’t seem to be quadratic .? can anyone me, in advance

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10