Question

The area of this rectangle is 54 square inches. Create an equation to find the value of n.

First drop down:

-3
1
3
-1

Second drop down:

-3
3
1
-1

Third drop down:

-48
-52
-60
-6

Answer 1

Explanation:

we know the area of a rectangle is

length × width.

so,

3(n - 1)(n + 2) = 54

3(n² + 2n - n - 2) = 54

3(n² + n - 2) = 54

3n² + 3n - 6 = 54

3n² + 3n - 60 = 0

now we could simply divide everything by 3

n² + n - 20 = 0

but based on the listed drop-downs this simplification is seemingly not desired.

so, the right answer remains

3n² + 3n - 60 = 0

and the drop-downs are therefore

3

3

-60