59.99 video game that is on sale for 15% off, that has a sales tax of 3.5

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square

At the beginning of year 1, carlos invests $600 at an annual compound interest rate of 4%. he makes no deposits to or withdrawals from the account. which explicit formula can be used to find the account's balance at the beginning of year 5? what is, the balance?

Pleas ! i just cant seem to get it right! choose: congruent or proportional choose: cf or ce or bc choose: segment addition postulate or cpctc