Question

hey can someone help cus ive been asking this same question for an hour and everyone who responded didnt give a real answer-

Answer 1

Answer: C) 9 feet

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Work Shown:

Let's call the "height" to be the "width".

The area of a rectangle is

area = length*width

We're told the width is 8.5 feet

If the length is some unknown variable L, then

area = length*width

area = L*8.5

area = 8.5L

We want the area to be at least 76.5 square feet

This means 8.5L is either equal to 76.5, or larger than it

`\text{ area } \ge 76.5\\\\\\8.5L \ge 76.5\\\\\\(8.5L)/(8.5) \ge (76.5)/(8.5) \ \ \text{ ... divide both sides by 8.5}\\\\\\L \ge 9\\\\\\`

This shows the length can be 9 feet or larger.

In other words, the minimum length is 9 feet.