Temperature and Fraction Concepts

The video tutorial explains how to calculate the temperature after a certain number of hours given an initial temperature and a constant rate of increase. It demonstrates converting mixed numbers to improper fractions, simplifying fractions, and substituting values into an expression to find the final temperature after six hours.

What was the initial temperature at dawn?

• 74 degrees

• 76 degrees

• 72 degrees

• 70 degrees

By how many degrees does the temperature rise every hour?

• 2 degrees

• 2.5 degrees

• 2.25 degrees

• 1.5 degrees

What is the expression used to calculate the temperature T hours after dawn?

• T + 72

• 3T + 72

• 2T + 72

• 2.25T + 72

What value of T should be substituted to find the temperature after six hours?

• 6

• 5

• 7

• 4

How is the mixed number two and one-fourth converted into an improper fraction?

• 10/4

• 7/4

• 8/4

• 9/4

What is the result of multiplying 9/4 by 6?

• 54/4

• 27/2

• 36/4

• 18/2

What is the final temperature after six hours?

• 84.5 degrees

• 85 degrees

• 85.5 degrees

• 86 degrees

How is 27/2 converted back into a mixed number?

• 15 and 1/2

• 13 and 1/2

• 14 and 1/2

• 12 and 1/2

What is the sum of 72 and 13.5?

• 85.5

• 85

• 86

• 84.5

What is the decimal representation of 85 and one-half?

• 85.5

• 85.4

• 85.2

• 85.6