Concept explainers
(a)
Graph the equation that represents how much James earns in a month in which he sell x cars.
(a)
Answer to Problem 42PPS
Explanation of Solution
Given:
James earns a monthly salary of $1200 and a commission of $125 for each car he sells.
Concept Used:
James earns a monthly salary of $1200. A commission of $125 for each car he sells.
Let the number of cars he sells in a month = x
Equation:
Calculation:
Graph the equation:
Table | Equation: |
x |
Thus,
(b)
Use the graph to estimate the number of cars James needs to sell in order to earn $5000.
(b)
Answer to Problem 42PPS
He needs to sell 31 cars.
Explanation of Solution
Given:
James earns a monthly salary of $1200 and a commission of $125 for each car he sells.
Concept Used:
From the graph make a line at $500 in the y − axis and find the corresponding x − values. x value of the number of cars he must sell to get the amount $5000.
Calculation:
The graph of the equation y = 1200 + 125x
From the graph we can estimate the number of car is 31. If he sells 31 cars in a month, then with his monthly salary and the commission will be $5000. |
Thus, he needs to sell 31 cars to make an income in a month will be $5000.
Chapter 3 Solutions
Algebra 1
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