Answer: 50,000
Explanation:
The question shows that at the current number of accident per period which is 35,000, 0.1 fatalities are recorded.
If the new seat belt law reduces the fatality rate from 0.1 to 0.07, how many accidents would have to occur for the new law to match the previous fatality rate given the previous number of accidents.
Let the new number of accidents be x;
35,000 * 0.1 = 0.07 * x
3,500 = 0.07x
x = 3,500/0.07
= 50,000
At 50,000 accidents, the new law will cause the same amount of fatalities than before. Anything more than 50,000 would lead to more fatalities than before.