11, 13, and 16. sorry if im wrong, and i hope this helps.
C: Bc 3 * c = 3c (plus 7 more) = 7+3c
Given :




Let's solve by using midpoint formula :










Hope Helps! :)
The answer is $10 because 123=$6 and 4 hours is =$4 6+4=10
(0,-7)
-7=11(0)+4
-7=0+4
-7 is not 4 -----not a solution
(-1,-7)
-7=11(-1)+4
-7=-11+4
-7=-7 ----solution
(1,-7)
-7=11(1)+4
-7=11+4
-7=15
-7 is not 15 ----not a solution
(2,26)
26=11(2)+4
26=22+4
26=26 ----soltion
(-1, -7) & (2, 26) are solutions to the equation