You are playing a card game with red and black cards where the red cards (r) are worth five points and the black cards (b) are worth ten points. you currently have 11 cards and a total of 70 points. which system of equations can be solved to find the number of each type of card you have?

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.