There are 325 7th graders in 12 classes. Determine the unit rate.

Which addition property is being illustrated below? (type commutative or associative) (6 + 7) + 1 = 6 + (7 + 1)

Type the correct answer in each box. use numerals instead of words. if necessary, use / fir the fraction bar(s). the graph represents the piecewise function: h

At noon a tank contained 10cm water. after several hours it contained 7cm of water. what is the percent decrease of water in the tank?