Paolo purchased a shirt at store a. he paid $19.50 for the shirt. raoul purchased the same shirt at store b for $22.35. how much money did paolo save by purchasing the shirt at store a instead of at store b? enter your answer in the box.

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

If the cost to mail a package is an initial $5 and $0.28 for every pound the total cost to mail a package was $11.27, how much did the package weigh?

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?