Convert from vertex to standard form
y = 6(×-4)^2-1

Joe has a rectangular chicken coop. the length of the coop is 4 feet less than twice the width. the area of the chicken coop is 510 square feet. what is the length of the chicken coop?

You decide instead to take the train there. the train will take 135 minutes. convert this into hours and minutes.

If 20% of a number is 35, what is 50% of that number?