(4) B is the midpoint of AC, D is the midpoint of CE, find BD.

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%.

I’ve been trying all day to figure this puzzle out. i need the work for it aswell. it is a factoring polynomials tarsia. the image is below.

The equation of a parabola is given. y=18x2+4x+20 what are the coordinates of the focus of the parabola?