Anthony put $3000 into a savings account with a fixed interest rate of 3.9% for three years. How much money will be in the account after 3yrs?

How many natural numbers n satisfy the inequality: 1/7 < n/10 < 4/5 ?

Could someone with number 1 and 2

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?