There are 30 mystery books in Chin's
book collection. If 6% of his books
are mysteries, how many books does
Chin have in his collection?

Which of the following is the equation that says that the product of a number and ten is equal to 20 percent of that number ? a) 10n= 2.0n b) 10+n=.20n c) n+ .20n=10 d) 10n=0.20n

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?