samantha puts an initial $500 into a savings account. the account has a 4% annual compound interest rate. what is the function that best represents samantha's account and how much does she have in savings after 5 years? round your answer to the nearest dollar.
hint: use the formula, f(x) = p(1 + r)x.

The bottom of ignacio's desktop is 74.5cm from the floor. ignacios sits in his adjustable chair, and the tops of his legs are 49.3cm from the floor. each clockwise rotation of the knob on the chair raises ignacio's legs by 4.8cm. write an inequality to determine the number of clockwise rotations, r, ignacio could make with the knob without his legs touching the desk.