I think your posting problem your missing an x after 28.
Therefore your answer is
C. (2x+7)(2x+7)
To check use distributive
2x(2x)+2x(7)+7(2x)+7(7)
4x^2+14x+14x+49
4x^2+28x+49
If you give 4 points your friend has -2 points and you have 1 point you would be winning but if you take 4 than your friend has -10 points and you have -7 points so either way you win
X = boys
2x+24=5x
Subtract 2 x from each side
24=3x
X=24/3 = 8
there are 8 boys
9ft? to get the circumference, we multiply the diameter to pi, so all we need to do is divide 28 ÷ π<span>, and round.</span>