45 children attend preschool the number of two-year-olds is 1/2 the number of three-year-olds the number for your old is the same as the number of three-year-olds

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64

Me with this assignment ! i only partially understand, so explain. also it's a work sample. at the championship bike race, steve and paula were fighting for first place. steve was 175 feet ahead of paula and had only 300 feet left to go. he was very tired and was going only 9 feet per second. paula was desperate to catch up and was going 15 feet per second. who won the bike race and by how far did she/he win?

How many dollars more is the price of a pie than the price of a doughnut at erik’s store