A department store buys shirts at a cost of $ 200and sells them at a selling price of $1400 and sells them at a selling price at $10 each. Find the percent markup.

the answer is n

im sorry but no. i just need to answer for 50 poonts oof

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.