What is the spread of Cassandra’s grades?
2 answers:
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Answer:
$0.21
Step-by-step explanation:
Let x be the amount of money earned per hour before raise and y be amount of money earned per hour after raise.
We have been given that before raise he worked 38 hours and earned $220. We can represent this information as:
We are also told that the next week, he received a raise. After raise he worked 30 hours and made $180. We can represent this information as: .
Let us solve for x and y.
Therefore, before raise Mike earned $5.7894 per hour.
Therefore, after raise Mike earned $6 per hour.
Now let us subtract 5.7894 from 6 to find Mike's raise.
Therefore, amount of Mike's raise to the nearest cent is $0.21.
