What is the vertex from the equation y=x^2-4+7 a. y=(x-2)^2+3 b. y(x-2)^2-3 c. y=(x+2)^2+3 d. y=(x+2)^2-3

Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.

A50% increase followed by 33 1/2% decrease

Which is the best estimate of the product of 0.9 x 0.88? 0 0.25 0.5 1