Last year Mr. down deposited $13,000 into an account earning 5.5% simple interest for one year how much interest was earned ?

$13,715 by the end of the first year

Step-by-step explanation:

+25 = x

step-by-step explanation:

here x is the hypotenuse of a right triangle whose legs are 7 and 24.   by the pythagorean theorem, 7² + 24² must equal x²:

x² = 49 + 576 = 625.   thus, x = +√625 = +25 = x