Concept explainers
(a)
To Find :
The rate of change of the shipping charge per pound.
(a)
Answer to Problem 14STP
The rate of change is 59 cents per pound of weight.
Explanation of Solution
Given :
The amount that a retailer charges for shipping an electronics purchase is determined by the weight of the package.The charges for several different weights are given in the table.
Concept Used :
Slope of a line passing through points
Calculation:
(b)
To Find :
Write an equation that could be used to find the shipping charge y for a package that weighs x pounds .
(b)
Answer to Problem 14STP
Explanation of Solution
Given :
The amount that a retailer charges for shipping an electronics purchase is determined by the weight of the package.The charges for several different weights are given in the table.
From part (a) ,
The rate of change is 59 cents per pound of weight.
Concept Used :
Slope of a line passing through points
- Slope intercept form a linear equation:
Calculation:
(c)
To Find :
The shipping charge for a package that weighs 19 pounds.
(c)
Answer to Problem 14STP
Explanation of Solution
Given :
From part (b), we have the equation :
Calculation:
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Algebra 2
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