Every week for 10 weeks i deposit $10 on monday, wednesday, and friday and withdraw $27.50 on tuesday and thursday . do i have a zero balance ?

Rosy waxes 2/3 of her car with 1/4 bottle of car wax.at this rate,what fraction of the bottle of car wax will rosey use to wax her entire car

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

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?