Question

The expression I found in question number 3 is 141x^2 - 200x + 47

Answer 1

Given the expression

`141x^2-200x+47`

a) The area of the grass if x=8 feet is:

Substitute x = 8 in the above expression

`area=141(8)^2-200(8)+47`

Calculate exponents

`\text{area}=141(64)-200(8)+47`

Multiply

`\text{area}=9024-1600+47`

Subtract 9024 - 1600

`\text{area}=7424+47`

And add 47

`\text{area}=7471`

Answer: area = 7471 ft^2

b) Answer: The area of the grass is 7471 square feet.