Marianna martinez sells copy paper to local schools. she earns a 13 percent straight commission on all sales. in november her sales totaled $28,540. what was her commission?

idk man good luck man

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.