The inequality 94 – 3 log2x ≤ 88 describes noise exposure level (in decibels) in terms of the number of hours, x, it takes to reach 100% of a person’s recommended daily noise dose. A manufacturer claims that the noise exposure level in their factory never exceeds 88 decibels. What is the smallest number of hours it would take for a worker in this factory to reach 100% of her daily noise exposure?

a. 1
b. 2
c. 3
d. 4