Evaluate: a+b/c if a = -6,b = -4 and c= -2

Pls i’m too dumb to know what i’m doing right now

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?

Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles