ElectricPavlov

a1=2       an = a(n+1)/3    (I think)      or maybe    a(n-1) = a(n) / 3    

An = 8(1/2)^n

x = small pkgs

10x = weight of small pkgs

x+10  = # lge pkgs

20(x+10) = wt of lge pkgs

10x + 20(x+10) = 950 pounds

30x + 200 = 950

30x = 750

x = 25 small packages        x+10 = 35 large packages

fx / gx   =   (x-3)(x+3)  /  (x-3)(x-4)         factored

     so we can see that x cannot equal 3 or 4   because the denomintaor would be ZERO....undefined/not allowed

Now we can 'cancel out' the x-3 in the numerator and the denominator andit becomes

(x+3)/(x-4)  and    x cannot be 3 or 4

Sorry....neither even or Odd...   it is not symetrical around origin  either....

Log 4 = .60205    (y1)

Log 6 = .77815    (y2)

Avg rate of change =  slope =   y2-y1  /  x2-x1     = log6-log4   /   6-4  = .088 per unit= .09 (rounded)

Deleted......see cphil's answer below

EVEN FUNCTION : A function with a graph that is symmetric with respect to the y-axis. A function is even if and only if f(–x) = f(x).

Soooooo......    what do you think now?   Does f(x) = f(-x) ?   

You can only drive a POSITIVE amount of miles, so the DOMAIN would be all positive real numbers.

The COULD be congruent if the neighbor cuts the 12 ft moulding in to three 4 ft pieces to build his triangle...both would be equalateral triangles.  If the neighbor uses ANY other lengths (say: 5,5,2) , the triangles will not be congruent.