Marla is tracking the week's weather by recording the outside temperature at 9 p.m. each day. Her data are shown in the table below.

Question

The table shows temperatures at 11 degrees Fahrenheit on Monday, 3 degrees Fahrenheit on Tuesday, -2 degrees Fahrenheit on Wednesday, 1 degree Fahrenheit on Thursday, and -4 degrees Fahrenheit on Friday.

Which of these statements are true? Choose all that are correct.

A.
The 9 p.m. temperature increased by 8 °F from Monday to Tuesday.

B.
The 9 p.m. temperature decreased by 5 °F from Tuesday to Wednesday.

C.
The 9 p.m. temperature increased by 3 °F from Wednesday to Thursday.

D.
The 9 p.m. temperature decreased by 3 °F from Thursday to Friday.

E.
Throughout the week, the 9 p.m. temperatures decreased every day.

F.
Throughout the week, the 9 p.m. temperatures increased once.

Answer 1

To analyze the statements based on the temperatures recorded by Marla, let's summarize the temperatures for each day:

• Monday: 11°F
• Tuesday: 3°F
• Wednesday: -2°F
• Thursday: 1°F
• Friday: -4°F

Now, let's evaluate each statement.

A. The 9 p.m. temperature increased by 8 °F from Monday to Tuesday.

• Calculation: 3°F (Tuesday) - 11°F (Monday) = -8°F (decrease)
• This statement is false.

B. The 9 p.m. temperature decreased by 5 °F from Tuesday to Wednesday.

• Calculation: -2°F (Wednesday) - 3°F (Tuesday) = -5°F (decrease)
• This statement is true.

C. The 9 p.m. temperature increased by 3 °F from Wednesday to Thursday.

• Calculation: 1°F (Thursday) - (-2°F) (Wednesday) = 1 + 2 = 3°F (increase)
• This statement is true.

D. The 9 p.m. temperature decreased by 3 °F from Thursday to Friday.

• Calculation: -4°F (Friday) - 1°F (Thursday) = -5°F (decrease)
• This statement is false.

E. Throughout the week, the 9 p.m. temperatures decreased every day.

• From Monday to Tuesday, the temperature significantly decreased, but then there were increases (Tuesday to Wednesday, and Wednesday to Thursday).
• This statement is false.

F. Throughout the week, the 9 p.m. temperatures increased once.

• The temperature increased from Wednesday to Thursday.
• This statement is true.

So, the true statements are:

• B: The 9 p.m. temperature decreased by 5 °F from Tuesday to Wednesday.
• C: The 9 p.m. temperature increased by 3 °F from Wednesday to Thursday.
• F: Throughout the week, the 9 p.m. temperatures increased once.