Question 334696
The number of keys on a broken piano can range from 0 to 88. If we have 12 broken pianos, then the number of keys on them can range from 12 * 0 as a minimum to 12 * 88 as a maximum. We can write this as
12 * 0 ≤ x ≤ 12 * 88
0 ≤ x ≤ 1,056