the temp is 56 degrees farenheit. the temp decreases for 6 hours each hour the temp drops by 3 degrees Fahrenheit. then the temp goes up 12 degrees farenheit in one hour. what is the temp after 7 hours?

bull

step-by-step explanation:

yx = 36

step-by-step explanation:

cos f = opposite side/ hypotenuse

cos f = yw / yx

we know cos f = 4/9 and yw =16

4/9 = 16/yx

multiply each side by yx

4/9 yx = 16/ yx * yx

4/9 yx = 16

multiply each side by 9/4

9/4 * 4/9 yx = 16 *9/4

yx = 36

a is the best answer choice