Suppose the band sells erasers for $2 per package and pencils for $5 per package. the band sells 220 packages in all and earns a total of $695. write a system of equations to find the number of teacher type of package sold

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.