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

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