Last year for every 100 million vehicles that travelled on a certain highway, 96 vehicles were involved in accidents. If 3 billion vehicles traveled on the highway last year, hom many of those vehicles were involved in accidents (1 billion=1,000,000,000)? Choices.
A) 288	B) 320	C) 2880	D) 3200	E) 28800
Explanation:   If r is halved then it is possible to substitute 1/2r for r in the formula and simplify:   1/(2(1/2r))^3=1/(8(1/8r^3))=1/r^3   Compared to the original where:   V=1/(2r)^3=1/(8r^3), the new value of V is 1/r^3 or   8(1/(8r^3))=8V   When r is halved then V is multiplied by 8.   Answer: Option 320
<result>B</result>
Last year for every 100 million vehicles that travelled on a certain highway, 96 vehicles were involved in accidents. If 3 billion vehicles traveled on the highway last year, hom many of those vehicles were involved in accidents (1 billion=1,000,000,000)?