Which ratios have a unit rate of 4? Choose ALL that apply.

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?

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums, 28 play drums, 18 play the guitar. what is the probability that the applicant who gets the job plays drums or guitar?