Question

Item 16 a dentist's office and parking lot are on a rectangular piece of land. the area (in square meters) of the land is represented by x2+x−30. find the area of the land when the length of the dentist's office is 20 meters.

Answer 1

a. (x-5)m b. 390^2m

Explanation:

So if you have the same question I do, there is 2 parts (a, b) and (x+6)(x-5) are the two equations, and the answer to part a is (x-5). Then for the second part is 390 meters squared.

Answer 2

For this case, the first thing we should do is use the following equation:
x ^ 2 + x-30
Here, we substitute the value of x = 20
We have then:
(20) ^ 2 + (20) -30 = 390 m ^ 2
Answer:
the area of the land when the length of the dentist's office is 20 meters is:
390 m ^ 2