Answer:
One way to find the least common multiple of two numbers is to first list the prime factors of each number. Then multiply each factor the greatest number of times it occurs in either number. If the same factor occurs more than once in both numbers, you multiply the factor the greatest number of times it occurs.
Step-by-step explanation:
Check the picture below.
includes 2, notice, it doesn't go below 2 over the y-axis, and then it keeps on going up. So, the range is from +2 onwards.
Now it would be
-2.3+(-5.9)
now just add those two together
and u get -8.2
So the answer is A
A. Surveying the students about their favorite type of math problem.
and
C. Sampling water for contaminants