10) → michael paid $8.40 for a dvd after having been given a 30% discount.
what was the presale price of the dvd?
on my elementary math class on college i don’t know where to start this needs to be shown full work

Ben wants to play a carnival game that costs $2. in his pocket he has 5 red tickets worth 35 cents each, and 15 blue tickets worth 10 cents each. which of the following systems of inequalities correctly represents the constraints on the variables in this problem? let represent the red tickets and b represent the blue tickets.

Aprojectile is thrown upward so that its distance above the ground after t seconds is given by the function h(t) = -16t2 + 704t. after how many seconds does the projectile take to reach its maximum height?

Y=(x+3)(x-4)(x+1)^2 sulutions? multiplicity?