You earn 1 point for each correct response on a multiple choice test and lose 0.5 point for each incorrect response. each question has 4 answer choices. if a student just guesses, what is the expected value of the guess?

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

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?

What is the perimeter of an equilateral triangle if each side is (x+3)?