Answer:
i am pretty sure its 8
Step-by-step explanation:
because a negative plus a positive = wichever one is bighger and 8 is bigger than 3 so 11 is positive. 8 +3 = 11
c
Step-by-step explcanation:
next
90 inches
Step-by-step explanation: 7 feet*12 inches= 84 and .5 feet*12 inches= 6.
84 inches+ 6inches=90inches
B&C are the answers.