Answer:
7 inches.
Step-by-step explanation:
Longest book length - Shortest book length
terms- + -
variables- x p
coefficent-7 3
constant- 9
208
= 128 + 64 + 16
= 1 * 2⁷ + 1 * 2⁶ + 1 * 2⁴
= 11010000. (base 2)