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4th Edition

James Stewart

Publisher: Cengage Learning

ISBN: 9781337687805

Chapter 1.1, Problem 22E

a.

To determine

**To graph**: The temperature reading

t | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 |

T | 68 | 65 | 63 | 63 | 65 | 76 | 85 | 91 |

Expert Solution

**Given information**:

It is given that Temperature readings (in °F) were recorded every two hours from midnight to 2:00 PM in Baltimore on September 26, 2007. The time was measured in hours from midnight as shown in table below.

t | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 |

T | 68 | 65 | 63 | 63 | 65 | 76 | 85 | 91 |

**Graph**:

The graph of T vs t can be drawn by using t as x-axis and T as y-axis. The obtained graphs is as like this,

**Interpretation**:

The obtained graph shows that first temperature decrease till 8 a.m. and then increases till 14:00 that means till 2 P.M.

b.

To determine

**To calculate: **The temperature at 11:00 a.m. using the given graph.

Expert Solution

The temperature at 11:00 a.m. is

**Given information:**

It is given that Temperature readings (in °F) were recorded every two hours from midnight to 2:00 PM in Baltimore on September 26, 2007. The time was measured in hours from midnight as shown in table below.

t | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 |

T | 68 | 65 | 63 | 63 | 65 | 76 | 85 | 91 |

**Calculation:**

Consider the given graph, the time 11:00 a.m. lies in between 10 to 12 on the x-axis. Now, take the corresponding value of y with respect to x as 11, it is find out to be 80 on this graph.

Therefore, the temperature at 11:00 a.m. is