At 8 am the temperature was 3 degrees below zero. by 9 am the temperature had gone up 6 degrees, but by 10
am it had gone down again 4 degrees. what was the temperature at 10 am?
make a selection:
a. 5 degrees below zero
b. 1 degree above zero
c. 1 degree below zero
d. 5 degrees above zero

C) 1 degree below zero

Step-by-step explanation:

3 degrees below zero = -3

-3 + 6 = 3

3 - 4 = 3 + -4 = -1

At 10 AM the temperature was -1 or 1 degree below zero.

b.an increase in a causes b to decrease

3. (5x + 1) - (-10x + 6)

simplify the answer choice. combine like terms. remember to distribute the negative to the terms inside the second parenthesis. also remember that two negatives = one positive, and one of each sign = negative.

- (-10x + 6) = + 10x - 6

simplify. combine like terms:

5x + 1 + 10x - 6

5x + 10x + 1 - 6

15x - 5

∴ it is your answer

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