Sally has a candy bar. if she gives 2/5th of the bar to mark and mark gives 1/2 of his piece to john, what percentage of the original bar does john have?

Ireally need subtract and simplify.(-y^2 – 4y - 8) – (-4y^2 – 6y + 3)show your work, ! i will mark you brainliest but you have to show your work.

Acd that is originally priced at $15.85 red-tagged for the sale. what is the sale price of the cd

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?