Pls

the temperature in degrees celsius (c) can be converted to degrees fahrenheit (f) using the formula f(c)= 9/5 c+k, where k is a constant. find k, if to c=−40ºc corresponds f=−40ºf.

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?