Do all of these!
q: a castle had to be guarded 24 hours a day. five knights are ordered to split each day's guard duty equally. how long will each knight spend on guard duty in one day?

(a) record your answer in hours.
(b) record it in hours and minutes.
(c) record your answer in minutes.

Time/shifts=time per knight

shifts=5

24/5=hours
24/5=20/5+4/5=4+4/5
4/5 times 60=48
4hr and 48 mins
24hr=60*24mins=1440mins
1440/5=288mins per night

A. 4 and 4/5 hour or 24/5 hours
B. 4hr and 48 mins
C. 288 mins

This question is asking how many numbers out of the four possible answers fulfill the rule that x must be less than or equal to -2.  So try out each number and see whether or not this statement is true, that is: is the number in place of x less than or equal to -2, or not?

-2:  -2 fulfills the statement, as it is equal to -2.
-2.45:  Also fulfills the statement, since it is less than -2.
-8:  Once again fulfills the statement, as it is less than -2.
-1.76:  DOES NOT fulfill the statement, it is greater than -2.

The answer would be -1.76