The mean is 7.5 you add up all the numbers and then divide by the amount of numbers there is
Simplify the following:
-5×1×11×4
-5×1 = -5:
-5×11×4
-5×11 = -55:
-55×4
-55×4 = -220:
Answer: -220
A pound is larger then a ounce
If you mean 9% of 153 your answer is 13.77
I'm pretty sure you did it right.