At 4pm the temperature started to change drastically. Each hour for three hours, the temperature decreases by 7 . Which expression best shows another way to write the product for the temperature 7+7+7 7+7+7+7 (-1)(7+7+7) (-7)+(-7)+(-7)+(-7)
Mathematics · High School · Mon Jan 18 2021
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Given the statement:
At 4pm the temperature started to change drastically. Each hour for three hours, the temperature decreases by 7 .
Determine the expression which best represents the answer for the given statement.
Solution:
Since the span of the temperature drop is 3 hours, then we can write it as,
= - 7 - 7 - 7
= - 21
Based on the given value, we can choose from the choices the similar answer. In such case we'll have,
= -1 ( 7 + 7 + 7)
= -1 ( 21 )
= -21
Final answer:
= -1 ( 7 + 7 + 7)