What is the perimeter of a quadrilateral with vertices at (3,-6),(8,-6),(3,-4), and (8,-4)

Jim had 3,067.48 in his checking account he wrote a check to pay for two airplane tickets. his account now has 1,845.24.

How many revolutions will a car wheel of diameter 28 in. make over a period of half an hour if the car is traveling at 60 mi/hr? the final answer is supposedly 21,609 but i have no idea how to get that, show work : )

1) for the triangle shown, find the value of x. a) 4 b) 6 c) 8 d) 10 e) none of the above 2) for the triangle shown, find the value of y. a) 8 b) 8√2 c) 8√3 d) 16√3 e) none of the above