The width of a rectangle is the length minus 6 units. The area of the rectangle is 27 units. What is the length, in units, of the rectangle.

Step-by-step explanation:

Let, the length of the rectangle be 'L'

Width of the rectangle be 'W'

Area of the rectangle=

Area of a rectangle=

Equating to zero:

OR, Similarly:

units

The length of the rectangle cannot be negative,

therefore,

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

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