A cube is cut into two pieces by a single slice that passes through points A, B, and C.

What shape is the cross section?
Describe how to slice the three-dimensional figure to result in each cross section.

Here are two three-dimensional figures.

Describe a way to slice one of the figures so that the cross section is a rectangle.
Each row contains the degree measures of two supplementary angles.

Complete the table.
Two months ago, the price, in dollars, of a cell phone was c.
Last month, the price of the phone increased by 10%. Write an expression for the price of the phone last month.
Two months ago, the price, in dollars, of a cell phone was c.
This month, the price of the phone decreased by 10%. Write an expression for the price of the phone this month.
Two months ago, the price, in dollars, of a cell phone was c.
Is the price of the phone this month the same as it was two months ago? (From question 5 and 6.)