Answer:
He made 16 groups which means 5 Students in each group
Step-by-step explanation:
Because 80 divided by 16 is 5 and 5 is a prime number
 
        
             
        
        
        
Answer:14
Step-by-step explanation:
 
        
             
        
        
        
This is   1/2 to 1/10
multiply each fraction by 10:-
= 5 : 1
The answer is 5  Choice D
        
             
        
        
        
f(5) = 3 means (5,3) is on the graph of f.
On the new graph, y = f(x+1) + 2, what do the +1 and +2 do?
Things inside the function notation inpact the x-values, since that's where x sits.
This outside the f(x) notation impact the y-values, since those are done after you've evaluated the function.
"+1" on the inside shifts every point to the left 1 unit.  (Inside changes are almost always opposite from what it looks like it would do.)
"+2" on the outside will shift every point up by 2 units.
So what do you get if you take (5,3) and shift it left 1 and up 2?
 
        
             
        
        
        
Step-by-step explanation:
Given the table:
Month              f(x) = Number of imports    g(x) = Number of exports
January (1)                3                                                1
February (2)             4                                                3
March (3)                  5                                                5
April (4)                     6                                                7
From the table, it is clear that:
Number of imports = number of month + 2
so

also
Number of exports  = 2(number of month) + 1
so

Therefore, number of imports equals the number of month plus one. i.e.  , which is a linear function.
, which is a linear function. 
If we compare it with slope-intercept form of the line

Then,
slope = m = 1
y-intercept = 2
Also number of exports equals is also a linear function.
i.e. 
Here,
slope = m = 2
y-intercept = -1