The probability of having at least 4 girls is 0.1875.
I think it’s b because x when it’s alone is one i think
9x^2 - 14x + 20x^2
= 9x^2 +20x^2 -14x
= 29x^2 -14x
You would divide 51 by 2 to get the answer, as the units are the same, for an answer of 25 two-thirds foot sized pieces, with 1 as a remainder.
They are the exact same, so no.