Idon't really know what the statement means. if i could get a clearer version of it then that would alot!

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?

Given: f(x) = 2x + 5 and g(x) = x2 and h(x) = -2x h(g(f( = x2+ vx+ x + y

On average, how many more hits will he get when he bats 100 times at home during the day as opposed to 100 times away at night?