algebra quiz due in 2 hours -only for good algebra people

wk10quiz.pdf

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0/100 submissions Current Score : – / 30 Due : Monday, September 8 2014 09:00 AM EDT

1. –/2.72 points

When a person in California renews the registration for an automobile, the bar graph shown below is included with the bill.

Use this bar graph to answer the question. The following statement is included with the graph.

There is no safe way to drive after drinking. These charts show that a few drinks can make you an unsafe driver. They

show that drinking affects your BLOOD ALCOHOL CONCENTRATION (BAC). The BAC zones for various numbers of drinks

and time periods are printed in white, gray, and red. HOW TO USE THESE CHARTS: First, find the chart that includes your

weight. For example, if you weigh 160 lbs., use the "150 to 169" chart. Then look under "Total Drinks" at the "2" on this

"150 to 169" chart. Now look below the "2" drinks, in the row for 1 hour. You'll see your BAC is in the gray shaded zone.

This means that if you drive after 2 drinks in 1 hour, you could be arrested. In the gray zone, your chances of having an

accident are 5 times higher than if you had no drinks. But if you had 4 drinks in 1 hour, your BAC would be in the red

shaded area . . . and your chances of having an accident 25 times higher.

Suppose that you are over 18 years of age, weigh 125 pounds and have two drinks in 2 hours. According to the figure, are you

seldom illegal, maybe illegal, or definitely illegal?

seldom illegal

maybe illegal

definitely illegal

2. –/2.72 points

Draw a stem-and-leaf plot for the data set. (Enter numbers from smallest to largest separated by spaces. Enter NONE for stems

with no values.)

Data set A: The annual wages of employees at a small accounting firm are given in thousands of dollars.

15 60 37 34 18 21 36 36 27 21 50 14 16

Week 10 Quiz (Chapters 14 & 15) (Quiz)

Robert Mills

MAT104, section 050VA016, Summer 1 2014 Instructor: FRANOTIS STALLWORTH

WebAssign

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3. –/2.72 points

The monthly cost for health care for an employee and two dependents in a certain year is given in the following table.

Provider Cost Provider Cost

Maxicare $415.13 Kaiser $433.51

Cigna $424.78 Aetna $436.10

Health Net $427.41 Blue Shield $442.27

Pacific Care $428.20 Omni Healthcare $457.75

Redwoods Plan $431.60 Lifeguard $457.80

Draw a box plot for the monthly costs of health care (ranked from lowest to highest).

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4. –/2.72 points

Use the nutritional information about candy bars given in the table to answer the questions.

(a) What is the mean calories from fat? (Round your answer to the nearest hundredth.)

calories

(b) What is the median (in grams) of total fat?

5. –/2.72 points

The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 195 and a variance of 16.

The material is considered defective if the breaking strength is less than 185 pounds. What is the probability that a single,

randomly selected piece of material will be defective? (You may need to use the standard normal distribution table. Round your

answer to four decimal places.)

https://www.webassign.net/smithnm12/14-table-10.gif

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6. –/2.72 points

Find three ordered pairs that satisfy the equation.

(x, y) =

Use this information to graph the line.

y = x + 2

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7. –/2.72 points

Graph the line through the given point and with the given slope.

8. –/2.72 points

Graph the first-degree inequality in two unknowns.

(1, −2); m = − 1

y ≥ 0

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9. –/2.72 points

Sketch the graph of the equation.

y = x2 + 6x + 9

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10.–/2.72 points

Tell what the output value is for the function machine for the given values.

(a) 2

(b) 9

(c)

(d)

(e) t

11.–/2.8 points

If f(x) = x2 + 3, find the following.

(a)

(b)

−8

f(−4)

f 3