Question

effect of blood alcohol concentration (bac) on motor vehicle crashes
about how much higher is the risk of a vehicle crash at a bac of 0.10 percent than a bac of 0.00 percent?

the risk of a vehicle crash at
a bac of 0.00 percent?

Explanation:

Looking at the graph, at BAC 0.00, the relative likelihood is near 0. At BAC 0.10 (close to 0.08 - 0.12 range on x - axis), the relative likelihood is around 5. So it's about 5 times as likely.

Answer:

about 5 times as likely