Bob has four pieces of bubble gum. his friend gives him nine more pieces. by what percent has bob's amount of bubble gum change

Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths

35 ! insert < , > , or = to make the sentence true. 12 __ 25 > =

There are 18 female students and 16 male students in a class. which of the following expresses the ratio of female students to male students in simplest form? а) 10 b) 9 to 8 c) 8: 9 d)18/16