Mr. Marzano taught 150 students at the high school. The following year he started teach elementary students and had 22 students. What is the percent decrease?

In the surface area formula for cylinders which expressionrepresents the lateral area

Acar travels at an average speed of 52 miles per hour. how long does it take to travel 299 miles

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?