Find the sum and express it in simplest form. (-y + 5a - 4) + (-3y - a - 5)

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%.

If angle 2=3x +1 and angle 3=2x +4what is angle 2

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)