Ineed with this i  partly know how to do this, but not 100%. use the linear combination method to solve the system of equations. explain each step of your solution. 2x - 3y = 13 x + 2y = -4 your step by step will me get this down.

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%.

Identify reflection rule on a coordinate plane that verifies that triangle a(-1,7), b(6,5), c(-2,2) and a’(-1,-7), b(6,-5), c’(-2,2) triangle are congruent when reflected over the x-axis

21/2 divided by 3 1/3 = s divided by 4 1/4 . what is s?