Question

At 4 p.m., the temperature started to change drastically. Each hour, for three hours, the temperature decreased by 7°F. Which expression best shows another way to write the product for the temperature change?

Answer 1

Answer:

The correct option is A

Step-by-step explanation:

The question is incomplete because the options are not given for the question. Lets complete the question first. The options for this question are given below.

A)   (-1)(7+7+7)

B)   (-7)+(-7)+(-7)+(-7)

C)   7+7+7

D)   7+7+7+7

Now look at the conditions given. Supoose at 4pm, the temperature is x°F at 4pm. As temperature is decreasing 7°F every hours, and it happenss for 4 hours.

We can say that after one hour, temperature is:

5pm: x°F - 7°F

After two hours:

6pm: x°F - 7°F - 7°F

After three hours:

7pm: x°F - 7°F - 7°F - 7°F

Hence, the expression is given by:

-7 - 7 - 7

or

(-1)(7+7+7)

Answer 2

Answer:

(-1)(7+7+7)

Step-by-step explanation:

I got it right on the test