Answer:
x^2 + 11x + 18.
Step-by-step explanation:
The length = x + 9 and the width = x + 2.
So the area
= length * width
= (x + 9)(x + 2)
= x(x + 2) + 9(x + 2)
= x^2 + 2x + 9x + 18
= x^2 + 11x + 18.
Im srry i cant help with that because K12 will not let me look up answers i bet
It is D) 153.86 just find it by using the formula
Hey there!
First, let's find s:
s = (5 + 6 + 7) /2 = 9
Second, let's plug in the numbers into the formula:
A = 
Third, let's simplify the numbers to get one number under the square root:
A = [tex]\sqrt{216}
Fourth, we'll find the square root of 216 to get the area:
A = 14.697
Therefore, your answer is A.
Hope this helps!! :)