Answer please i really need help

Asocial networking site currently has 400,000 active members, and that figure is predicted to increase by 32% each year. the following expression represents the number of active members on the site after t years.

What is the result of converting 60 ounces to pounds remember there are 16 ounces in a pound

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.