The function would be h = 270 - 2.5s, where h is the height (in feet) and s it the time (in seconds) that has passed.
The 270 represents the initial value, which is given. We are told that the initial height of the block is 270 feet.
2.5s represents the feet that it has descended. We know the block is lowered at a rate of 2.5 feet per second. Multiplying this by s, the time, will give us how much it has descended.
length = area/width
l = 45/5 = 9
The length of the rectangle is 9.
If im not wrong the answer for this question is x=A/2+6z.
First you take the x out, so you will get x(2+6z).
Then move it to the other side as you want to find x. And it will look like the answer above. You can recheck later.
