A- Associative Property of Multiplication
X= -28
-2.5(-28) = 70
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Answer:
the $45 per hour mechanic worked 2 hours
the $120 per hour mechanic worked 8 hours
Step-by-step explanation:
45 X 2 = 90
120 X 8 = 960
960 + 90 = 1050
The question is to find an expression for the expenses
<u>Answer:</u>
E (x) =n + 5
<u>Explanation:</u>
The profit is defined as the difference between the revenue and the expenses.
<u>This means that:</u>
profit = revenue - expenses
<u>Now, we rearrange the equation to solve for expenses:</u>
expenses = revenue - profit
<u>From the given, we know that:</u>
expression for revenue is 18n
expression for profit is 17n - 5
<u>Substitute in the equation to get expression for expenses as follows:</u>
E (x) = 18n - (17n - 5)
E (x) = 18n - 17n + 5
E (x) = n + 5
Hope this helps :)
