Sandra buys 70 pencils with fuzzy tops. She gives 4 to each of her 15 classmates. The expression for the number of pencils she has left is 70 – (4 • 15). Answer each question to identify the parts of the expression. 1. In this expression, what does 70 represent?

2. What does (4 • 15) represent?
3. Is the expression 70 – (4 • 15) a difference of three terms, a product of two terms, or a difference of two terms? Identify the terms in the expression.

The triangles are similar. what is the value of x? x=

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below: