In November Mr. Lee’s students read 50 books. In December, they read 40 books. What is the percent increase or decrease in the number of books they read

Which of these numbers of simulations of an event would be most likely to produce results that are closest to those predicted by probability theory? 15, 20, 5, 10

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.

What is fraction that is equivalent to 3/8