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Hungerford - Contemporary Precalculus 4/e (Homework)

James Finch

Math - College, section 1, Fall 2010

Instructor: Dr. Friendly

Current Score: 20/34

Due: Thursday, September 9, 2010 19:00 EDT

About this Assignment

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Question
Points
1 2 3 4 5 6 7
4 6 2 8 0/8 0/4 0/2
Total
20/34

Description

Here are some textbook questions from Contemporary Precalculus A Graphing Approach 4/e by Thomas W. Hungerford published by Brooks/Cole Publishing. Click here for a list of all of the questions coded in WebAssign.


Instructions

This demo assignment allows many submissions and allows you to try another version of the same question for practice.



1. 4/4 points All Submissions Notes Question: HPrecalc4 1.1.046.
Question part
Points
Submissions
1 2 3 4
1 1 1 1
1/50 1/50 1/50 1/50
Total
4/4
 
Use interval notation to denote the set of all real numbers x that satisfy the given inequality. (If you need to use - or , enter -INFINITY or INFINITY.)
x 9
Your answer is correct.
Answer is not case sensitive.
Your answer is correct.,
Answer is not case sensitive.
Your answer is correct. Your answer is correct.

2. 6/6 points All Submissions Notes Question: HPrecalc4 1.3.026.
Question part
Points
Submissions
1 2 3 4 5 6
1 1 1 1 1 1
1/50 1/50 1/50 1/50 1/50 1/50
Total
6/6
 
Suppose a baseball playing field is placed on the coordinate plane, as in the picture.
(a) Find the coordinates of first and second base.
first(
Enter a number.
Your answer is correct.,
Enter an exact number.
Your answer is correct.)
second(
Enter a number.
Your answer is correct.,
Enter a number.
Your answer is correct.)

(b) If the left fielder is at the point (35, 265), how far is he from first base?
Enter a number.
Your answer is correct. feet

(c) How far is the left fielder in part (b) from the right fielder, which is at the point (310, 80)?
Enter a number.
Your answer is correct. feet


3. 2/2 points All Submissions Notes Question: HPrecalc4 2.3.004.
Question part
Points
Submissions
1 2
1 1
1/50 1/50
Total
2/2
 
A triangle has area 13.5 square inches, and its height is one-thirds of its base. What are the base and height of the triangle?
base =
Enter a number.
Your answer is correct.
height =
Enter a number.
Your answer is correct.


4. 8/8 points All Submissions Notes Question: HPrecalc4 3.2.042.
Question part
Points
Submissions
1 2 3 4 5 6 7 8
1 1 1 1 1 1 1 1
1/50 1/50 1/50 1/50 1/50 1/50 1/50 1/50
Total
8/8
 
The rule of the function g is given by the graph. Find each of the following.
(a) the domain of g
[
Enter a number.
Your answer is correct.,
Enter a number.
Your answer is correct.]

(b) the range of g
[
Enter a number.
Your answer is correct.,
Enter a number.
Your answer is correct.]

(c) g(0) =
Enter a number.
Your answer is correct.

(d) g(2.5) =
Enter a number.
Your answer is correct.

(e) g(4) =
Enter a number.
Your answer is correct.

(f) g(1.5) =
Enter a number.
Your answer is correct.



5. –/8 points Notes Question: HPrecalc4 3.3A.038.
Question part
Points
Submissions
1 2 3 4 5 6 7 8
0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1
0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50
Total
0/8
 
Find all intervals over which g is decreasing. (If there are extra answer boxes, enter NONE in the last boxes. Enter the interval that contains smaller numbers first. Enter INFINITY for and -INFINITY for - as needed.)
a = 7
b = 6
Enter a number.
,
Enter a number.
Enter an exact number.
,
Enter a number.

6. –/4 points Notes Question: HPrecalc4 5.2.014.
Question part
Points
Submissions
1 2 3 4
0/1 0/1 0/1 0/1
0/50 0/50 0/50 0/50
Total
0/4
 
Match the functions to the graphs. Assume c > 0.
f(x) = -3cx


f(x) = -3cx - 2


f(x) = cx


f(x) = cx + 5

7. –/2 points Notes Question: HPrecalc4 6.1.080.
Question part
Points
Submissions
1 2
0/1 0/1
0/50 0/50
Total
0/2
 
The pedal sprocket of a bicycle has radius 4.2 inches, and the rear wheel sprocket has radius 1.1 inches (see figure). The rear wheel has a radius of 12.6 inches and the cyclist is pedaling at the rate of 86 rpm.

(a) How fast is the bicycle traveling in feet per minute?
Enter a number.
 fpm

(b) How fast is the bicycle traveling in miles per hour?
Enter a number.
 mph

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