Answer:
x - 3 =
square both sides to get rid of square root
x^2 -6x + 9 = 4x - 7 , but remember 4x - 7 can't be less than 0 since it was square roots can't be less than 0
simplify the equation
x^2 - 10x + 16= 0
x = 8, x= 2
but x cannot equal 2, because if we plug in 2, the square root will be negative,
so x can only equal 8
so B is correct.
I'm not the best at quadratics, so pls comment if something is wrong
I think the answer is 0.420735492
6:2:3:4
for every 6 pairs of wedges she owns 2 Stillettos, 3 sneakers and 4 sandals
18/6 =3
3*2 =6 stilettos
3*3 = 9 sneakers
3*4 =12 sandals
18 + 6 + 9 + 12 = 45 pairs of shoes