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What is the slope of a line that is perpendicular to y = 3x + 1

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

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?