Answer:
He wrongly distributed 9 over 15 and Y and got the wrong answer. The product of 9 and 15 is 135 not 90.
Step-by-step explanation:
Given the expression used by baker to show the number of muffins he needed to make as [tex]9\left(15\:+\:Y\right)[/tex], we are to check if the expression id equivalent to 90+Y
According to distributive law;
A(B+C) = AB + AC (This shows that A is distributed over B and C)
Applying distributive law on [tex]9\left(15\:+\:Y\right)[/tex]
[tex]9(15+Y) = 9(15) + 9(Y)\\9(15+Y) = 135 + 9Y[/tex]
From the result gotten, we can see that Emily is wrong because he wrongly distributed 9 over 15 and Y and got the wrong answer. The product of 9 and 15 is 135 not 90.
