Sheila buys some boxes of pens, with 20 pens in each box.

Which expression represents the total number of pens Sheila bought?

20 : p

20 + p

20p

20-p

The motions of a car and a truck along a straight road are represented by the graph, which plots velocity (v) vs. time (t). The two vehicles are initially alongside each other at time t = 0.

What is the standard variation for this data set 6 4 9 5 5 4 5

Sam worked on his science fair project for 1/4 hour on Friday and 1/2 hour on Saturday. What are four common denominators for the fractions? Explain your reasoning.

What is 62 take away 38 =

A dress just went on sale and is 20% Off. To return to its previous price, How much in percentage should the price be raised?

To estimate the number of people in Springfield, population 10,000, who have a swimming pool in their backyard, 250 people were interviewed. Of those, 115 had a swimming pool.

Lee put $10,000 into a stock market index mutual fund that grew at an average of 7% per year for 10 years. About how much is in Lee's mutual fund account after 10 years? Ignore compounding.

How many, and what type of, solutions does 6x^2 - 2X + 7 = 0 have? 1 rational solution 2 no real solutions 2 rational solutions 2 irrational solutions

Alice worked for six hours and earned $29.88. How much did she make per hour? A) $4.30 B) $4.98 C) $5.15 D) $179.28

Which expression is equivalent to 4/5 X 1/3? 1. 4/3 X 5/1 2. 4/5 divided by 1/3 3. 4/5 divided by 3/1