Is the polynomial a difference of squares and if it is, factor the polynomial
y^2 - 9

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.a city water tank holds 20 gallons of water. a technician empties 25% of the tank. how many more gallons of water must be removed from thetank so that it has 5 of the water that it started with: the technician must removemore gallons of water for the tank to have 5 of the water that it started with.

Find the inverse of the given function. f(x)= -1/2sqr x+3, x greater than or equal to -3