57/40=14.25
14.25x100=142.5
d=142.5 feet
If 30% of his collection is 12 cars, then we can use the fraction
30/12=100/x
x=40
The answer is: (z - 6)(z + 15)
z² + 9z - 90 = z*z + 15z - 6z - 6*15 =
= (z*z + 15z) - (6z + 6*15) =
= z(z + 15) - 6(z + 15) =
= (z - 6)(z + 15)
Answer: Number one is C and number two is B
