Please help the questions are in the picture above

What is the inverse of the function f(x) = 2x + 1?

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!

Solve 17= -13 - 8x and show your work.