During the month of January, temperatures can decrease by 17° per week. If this happens, and the temperature on January 12th was 6°, what is the temperature on January 19th?

A.
11°
B.
-11°
C.
23°
D.
-12°

1 answer

To find the temperature on January 19th, we first need to determine the number of weeks between January 12th and January 19th.

January 12th to January 19th is a span of 1 week.

Since the temperature decreases by 17° per week, we subtract 17° from the temperature on January 12th (which was 6°).

So, the calculation will be:

\[ 6° - 17° = -11° \]

Thus, the temperature on January 19th will be -11°.

The correct answer is B. -11°.