Answer: 24
Explanation:
Given that m=5 and n=3, we can plug our values into the given expression to evaluate.
(5)(3)+9 [multiply]
15+9 [add]
24
The reason we multiplied before we added was due to the order of operations. Order of operations tells us to always multiply or divide first before we add or subtract. In this case, the multiplication happens to come first so we multiply, then add.