
Concept explainers
a.
To find the y- intercept
a.

Explanation of Solution
Given:
Function:
Calculation:
Substitute various values for x in the given function
Values of x | Values of f(x) |
0 | 1 |
1 | 425 |
2 | 361.25 |
3 | 307.06 |
Conclusion:
Therefore, the y- intercept is 1. The concentration of the medicine will be 1 milligram in the patients body as soon as the medicine is injected.
b.
To find the domain
b.

Answer to Problem 50PFA
Explanation of Solution
Given:
Function:
Concept used:
Domain is the set of values for which the function is defined.
Calculation:
Here, the function is defined for all values of x.
Therefore, the domain is
Conclusion:
The domain of the function is
c.
To calculate the range of the function
c.

Answer to Problem 50PFA
Explanation of Solution
Given:
Function:
Concept used:
The range of the function is the values defined for y .
Calculation:
Here, the range of the function is
The function is defined for all values of y greater than zero.
Conclusion:
Therefore, the range of the function is
d.
To sketch the graph of the given function
d.

Explanation of Solution
Given:
Function:
Graph:
From the table from subpart (a), plot the points on the graph to draw the curve
Inference:
From the above graph, the x values approaches 0 and the y values tends to infinity.
Chapter 7 Solutions
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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