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What single percentage change is equivalent to a 11% increase followed by a 13% increase?

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%.

Find the quotient. 50a2 – 98b2 -5a +7b

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles