Question

Which of these situations does not have quantities that combine to make 0? O A. A hot air balloon rises 40 feet. It then drops 40 feet to the ground. OB. A dolphin swims 20 feet straight down from the surface. It then rises 20 feet to return to the surface. O C. Hiroko earns $20 working concessions at the football game. She then earns $20 as a babysitter. O D. In the morning, the temperature rises 30 degrees. In the evening, it falls by 30 degrees.

Answer 1

Option C, where Hiroko earns money from two different sources, totaling $40, is the situation that does not have quantities that combine to make 0, as unlike the other options, it involves adding two positive amounts rather than offsetting a positive and a negative amount.

Step-by-step explanation:

The question we need to address is: Which of these situations does not have quantities that combine to make 0? Analyzing the given options:

• A. A hot air balloon rises 40 feet and then drops 40 feet back to the ground. The quantities here are +40 and -40, which sum up to 0.
• B. A dolphin swims 20 feet straight down from the surface and then rises 20 feet to return to the surface. These are +20 and -20, which also sum up to 0.
• C. Hiroko earns $20 working concessions at the football game and then earns another $20 babysitting. These are +$20 and +$20, which sum up to +$40, not 0.
• D. The temperature rises by 30 degrees in the morning and falls by 30 degrees in the evening. This is +30 degrees and -30 degrees, summing to 0.

Therefore, the situation that does not have quantities that combine to make 0 is Option C.