First, I would reduce 3/15 and 15/21 to simplest form.
1/5, 5,7
You could list multiples of all your denominators. But in this case, because two of your denominators are already prime (5 and 7), you can just multiply the three denominators together.
5 x 7 x 8
This will give you the LCD
Answer:
C
Step-by-step explanation:
C is the dependent variable because it depends on the other side of the equation. S can be anything, it doesn't matter what the others are. However, whatever c is depends on what s is, and changes depending on what you have for s.
Stem and Leaf Plot Advantages. The stem and leaf plot essentially provides the same information as a histogram, with the following added benefits: The plot can be constructed quickly using pencil and paper. The values of each individual data point can be recovered from the plot.
Points (3,6) and (1,-2)
Slope (m) = 
Change in y = -2 - 6 = -8
Change in x = 1 - 3 = -2
Slope (m) = -8 ÷ -2 = 4