(a) Explanation Given information: The equation for the temperature on 22 January 1943, is approximated by T = − 2.15 m + 54 where T is temperature in degree Fahrenheit and m is the number of minutes since 9:00 that morning. Calculation: Consider the equation for the temperature, T = − 2.15 m + 54 . Since and m is the number of minutes from 9:00 for that morning. For time 9 : 01 A .M . , the corresponding value of m is 1. Substitute 1 for m in T = − 2.15 m + 54 and solve for T . T = − 2.15 ( 1 ) + 54 = − 2.15 + 54 = 51.85 ° Therefore, the temperature in degree Fahrenheit is 51.85 ° . For time 9 : 08 A .M . , the corresponding value of m is 8. Substitute 8 for m in T = − 2.15 m + 54 and solve for T . T = − 2 (b) To determine To graph: The equation T = − 2.15 m + 54 where T is temperature in degree Fahrenheit and m is the number of minutes since 9:00 that morning and then find the temperature at 9:15 A.M. (c) To determine To calculate: The time at which the temperature stop to drop at − 4 ° F when the equation is T = − 2.15 m + 54 where T is temperature in degree Fahrenheit and m is the number of minutes since 9:00 that morning.

9th Edition

ISBN: 9780321997173

Author: Marvin L. Bittinger, Judith A. Beecher

Publisher: PEARSON

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Question

Chapter 9.1, Problem 62ES

(a)

To determine

To calculate: The temperature at 9:01 A.M., at 9:08 A.M., at 9:20 A.M when the temperature T in degree Fahrenheit, in Spearfish, South Dakota approximated as, T=−2.15m+54.

(b)

To determine

To graph: The equation T=−2.15m+54 where T is temperature in degree Fahrenheit and m is the number of minutes since 9:00 that morning and then find the temperature at 9:15 A.M.

(c)

To determine

To calculate: The time at which the temperature stop to drop at −4° F when the equation is T=−2.15m+54 where T is temperature in degree Fahrenheit and m is the number of minutes since 9:00 that morning.

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Chapter 9.1, Problem 61ES

Chapter 9.1, Problem 63ES

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Chapter 9 Solutions

Developmental Mathematics (9th Edition)

Ch. 9.1 - Objective 8.1a: Determine whether a given number...Ch. 9.1 - Prob. 2SR Ch. 9.1 - Prob. 1DE Ch. 9.1 - Prob. 2DE Ch. 9.1 - Prob. 3DE Ch. 9.1 - Prob. 4DE Ch. 9.1 - Prob. 5DE Ch. 9.1 - Prob. 6DE Ch. 9.1 - Prob. 7DE Ch. 9.1 - Prob. 8DE

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Prob. 32UTDW Ch. 9.4 - Prob. 33UTDW Ch. 9.5 - 1. 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The temperature at 9:01 A.M., at 9:08 A.M., at 9:20 A.M when the temperature T in degree Fahrenheit, in Spearfish, South Dakota approximated as, T = − 2.15 m + 54 .

Solution Summary: The author calculates the temperature in degree Fahrenheit in Spearfish, South Dakota, by T=-2.15m+54, where T is temperature and m is the number of minutes since 9:00.

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To calculate: The temperature at 9:01 A.M., at 9:08 A.M., at 9:20 A.M when the temperature T in degree Fahrenheit, in Spearfish, South Dakota approximated as, T=−2.15m+54.

To graph: The equation T=−2.15m+54 where T is temperature in degree Fahrenheit and m is the number of minutes since 9:00 that morning and then find the temperature at 9:15 A.M.

To calculate: The time at which the temperature stop to drop at −4° F when the equation is T=−2.15m+54 where T is temperature in degree Fahrenheit and m is the number of minutes since 9:00 that morning.

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Chapter 9 Solutions