(a)
To Calculate: Amount of money left after buying a meal.
(a)
Answer to Problem 27PPE
Cost | Amount remaining |
15 | |
21 | |
24 | |
30 |
Explanation of Solution
Given information: You had 55 when you entered the restaurant. Also the meal costs 15, 21, 24 and 30
Calculation: Make a table using the given meal costs. Tip is 15%. Divide by 100 to remove the percentage (0.15).To find the amount paid for the meal, multiply meal cost with tip and add it with meal cost. The calculation and the table is given below
Cost | Amount remaining |
15 | |
21 | |
24 | |
30 |
(b)
To identify: the function rule for the amount of money left after buying a meal.
(b)
Answer to Problem 27PPE
The function rule is
Explanation of Solution
Given information: You had 55 when you entered the restaurant and a tip 15%.
Calculation: Let ‘c’ be the meal cost and ‘m´ be the amount of money left.
To get the function rule, multiply the tip with the meal cost and add it with the meal cost. Finally subtract the cost with tip from the amount you have.
The function rule is
(c )
To graph: Graph the function rule using the table
(c )
Answer to Problem 27PPE
Explanation of Solution
Given information: Table from part (a)
Cost | Amount remaining |
15 | 37.75 |
21 | 30.85 |
24 | 27.40 |
30 | 20.50 |
Graph: Use the cost and amount remaining from the table as coordinates (x,y) and graph the table
Chapter 4 Solutions
High School Math 2015 Common Core Algebra 1 Student Edition Grade 8/9
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