Sophie is buying fabric to make items for a craft fair. the table shows some combinations of how much of each color fabric she might buy. which equations model the total yards of fabric sophie will buy? check all that apply.

What are “like terms”? why can we only add like terms?

Solve the triangle. a = 21°, c = 105°, c = 5

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.