Question

Which situation results in a final value of zero?
Select one:
A)the overall change in temperature when the temperature goes from -10°F to 10°F

B)the total profit made when a person buys an item for $2.25 and then sells the item for $2.25

C)the overall change in altitude of a hot air balloon after rising 21 kilometers from sea level

D)the total distance a person travels when he bikes 3.1 miles to school and then bikes 3.1 miles back home​

Answer 1

Answer:

Situation D

Step-by-step explanation:

Because the speed of the bike is the same while going and coming from the school.

Hope it helps ;)

Answer 2

Answer:

Option B. The total profit made when a person buys an item for $2.25 and then sells the item for $2.25

Explanation:

Option B is that if a person buys an item for $2.25 and then sells it at the same price, that is, $2.25, then he earns zero profit. In this case, the final value will be zero.

Option A is the overall change in temperature when the temperature goes from -10°F to 10°F. In this case, the final value won't be zero.

Option C is the overall change in altitude of a hot air balloon after rising 21 kilometers from sea level. In this case, also the final value won't be zero as the hot air balloon will be at some height after rising 21 kilometers from sea level.

Option D is the total distance a person travels when he bikes 3.1 miles to school and then bikes 3.1 miles back home. So, in this case, the final value will be $3.1miles+3.1miles=6.2miles$ as the person first bikes it to school and then back to his home so the final value will be the total distance the bike moved.