An initial investment of $1,000 at 12% interest is compounded weekly (use 52 weeks in a year), What will the investment be worth in 30 years?
Round your answer to the nearest cent.

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.