Please Help ASAP
Show work! Pictures below.

Aboat costs 19200 and decreases in value by 12% per year. how much will it cost in 5 years

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68

Use the formulas a = x 2 – y 2, b = 2xy, c = x 2 + y 2 to answer this question. one leg of a right triangle has length 11 and all sides are whole numbers. find the lengths of the other two sides. the other leg = a0 and the hypotenuse = a1