1 pack of 12 will give 4 students their pencils. 20/4 = 5
Answer:
x+2
Step-by-step explanation:
The firs 3 observations are x, x+2, x+4
Mean = sum of data/samaple size
Mean = x+x+2+x+4/3
MEan = 3x+6/3
Mean = 3(x+2)/3
Mean = x+2
Hence the required mean is x+2
You can tell whether a relation is a function by plotting the numbers on a graph and applying the vertical line test. If no vertical line passing through the graph intersects it at more than one point, the relation is a function.
The coefficient of a variable, unless otherwise specified, is assumed to be 1. variable have an "understood" coefficient of 1 because, for the variable to be listed, there must be at least one of it.
