M^-2 multiplied by n^3 power equals what, and the answer has positive exponents

Pls an ice cream shop sells 5 times as many cake cones as waffle cones use variable x to represent the number of waffle the ice cream shop sells and use this variable to write an expression for the number of cake cones the ice cream shop sells. enter the expression for the number of cake cones the ice cream shop sells

Which statements are true? see picture

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?