2-8 Literal Equations And Dimensional Analysis Worksheet With Answers - Cognero Page 24

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2-8 Literal Equations and Dimensional Analysis
JOBS Laurie mows lawns to earn extra money. She can mow at most 30 lawns in one week. She profits $15 on
each lawn she mows. Identify a reasonable domain and range for this situation and draw a graph.
The domain is whole numbers between 0 and 30, because Laurie can mow at most 30 lawns. The range is whole
numbers that are multiples of 15 between 0 and 450, because Laurie makes $15 for each lawn she mows.
D: {0, 30}; R: {0, 450}
ENTERTAINMENT Each member of the pit orchestra is selling tickets for the school musical. The trombone
section sold 50 floor tickets and 90 balcony tickets. Write and evaluate an expression to find how much money the
trombone section collected.
To find how much money the trombone section collected, multiply the number of each type of ticket by the cost of
that ticket. Then, find the sum of those products. The expression 50(7.50) + 90(5.00) can be used to find how much
the trombone section collected.
So, the trombone section collected $825.
Page 24
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Solve each equation.
8k + 9 = 7k + 6

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