1. -1 - 3 =
A. -5
B. 2
C. -4***
D. 4
2. -7 + 5
A. -2***
B. 12
C. -12
D. 2
3. 1.2 - 4.6 =
A. 5.8
B. -3.4***
C. -5.8
D. 3.4
4. A mountain climber ascends a mountain to its peak.
A. 12,540 feet above sea level***
B. 12,540 feet below sea level
C. 10,740 feet above sea level
D. 12,940 feet above sea level
To solve these questions:
1. To subtract -1 from -3, you need to subtract the absolute values and apply the sign of the larger number. Therefore, you have |-3| - |-1| = 3 - 1 = 2. Since -3 is the larger number, the answer would be -2. So, the correct answer is B. 2.
2. To add -7 and 5, you simply add the values together. -7 + 5 = -2. So, the correct answer is A. -2.
3. To subtract 4.6 from 1.2, you simply subtract the values. 1.2 - 4.6 = -3.4. So, the correct answer is B. -3.4.
4. The question states that the mountain climber ascends a mountain to its peak. This means that the climber is going up and the peak is above sea level. Therefore, the correct answer is A. 12,540 feet above sea level.