It's 4PM. If my raft leaves for Hawaii in h hours, where h is the sum of all integers x which satisfy ≤ x^2 ≤ 81, then my raft leaves for Hawaii at
A. 4 PM
B. 2 PM
C. noon
D. 8 AM
you left the lower limit out so I assume 0
sum of all integers from -9 to +9
looks like zero to me so 4 pm