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MA10020200440097, section 40097, Spring 2020

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There is an exact formula to convert Celsius temperatures to Fahrenheit. However, a simple approximation is twice the Celsius temperature plus 30. What is the approximate Fahrenheit temperature for 15°C?

The National Mall is approximately 4,400,000 square feet. If an event organizer estimates the density at 4 square feet per person, approximately how many people are attending the event on the mall?

people

A survey of pet owners who keep their pets in their homes or apartments were asked what kind of pet they owned. The percent of owners who responded for each pet type is shown in the following circle graph.

Yes

No

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From the graph, is it reasonable to estimate that more than 50% of the respondents had cats?

–/2 AUFQR1 1.2.P.006.

The following bar graph shows the approximate number of millionaires in the United States for selected years. (See Example 6 in this section.)

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(a) Between which two years did the number of millionaires increase the least?

2014 and 2015

2015 and 2016

2016 and 2017

2017 and 2018

2018 and 2019

2019 and 2020

(b) Between which two years did the number of millionaires increase the most?

2014 and 2015

2015 and 2016

2016 and 2017

The following broken-line graph shows how much an item that cost $10 in 1995 would cost, because of inflation, for the years shown. (See Example 8 in this section.)

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What would be the item's approximate cost in 2000? (Round your answer one decimal place.)

$

–/3 AUFQR1 1.2.021.EP.

A survey of pet owners who keep their pets in their homes or apartments were asked what kind of pet they owned. The percent of owners who responded for each pet type is shown in the following circle graph.

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If exactly 50% of the respondents had dogs, the portion of the circle graph representing the response "dogs" would be exactly

---Select--- of the area of the circle. The portion of the circle graph that represents the percent of respondents who had dogs is ---Select--- .

From the graph, is it reasonable to estimate that more than 50% of the respondents had dogs?

Yes

No

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AUFQR1 1.4.001.

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POINTS

MY NOTES

ASK YOUR TEACHER

Copy the link https://goo.gl/ZAQK2B. This will direct you to a document from which you can access spreadsheets that may be useful for checking your work for the exercise.

Two friends are to share a pizza that is one-third cheese, one-third pepperoni, and one-third green pepper. To Zelda, the cheese part is worth $9, the pepperoni part is worth $4, and the green pepper part is worth $3.

(a) What is the value of the pizza to Zelda?

$

(b) If the pizza is cut into such a way that she receives one-third of the cheese part, one half of the pepperoni part, and none of the green pepper part, does she receive a fair share of the pizza?

Yes

No

–/2 AUFQR1 5.4.002.

(a) Which of the following scatter diagrams suggests a nearly perfect positive linear correlation between the x and y variables?

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(b) Which of the following scatter diagrams suggests little or no linear correlation between the x and y variables?

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