ElectricPavlov

15 members x 45 minutes = 675 member miunutes required 

675 member minutes / 20 members = 33 3/4 minutes will be needed.

There are 8 rolls = 8! = 40320 possible combinatins  IF htere were no duplicate numbers

  BUT there is   two 1's   two 2 's   two 3's  and two 4's    so you have to divide that result by  2!  2! 2! 2! 

to get   40320 / 16 = 2520 possible sequences  

On second thought.....I would say 24      1   2    3    4     6    8    12   24 

I believe that would be '30'

  divisors  1  2   3   5   6   10   15   30 

Answer C    f(x) = 3 (x+10)      then    y = 3 (x+10) 

              one output value.

The   DOMAIN

of a function is the set of all input values, or x-values, for which the function is defined.

The   RANGE

of a function is the set of all output values, or y-values, for which the function is defined.

To write the equation y = ax + b in function notation, substitute   f(x ) 

for y.

16 has factors    1  2  4  8  16 

y - 8 = b  + 8                y ou give 8 and your b gains 8 to be equal 

      --- or ---                          y-b = 16 

y + 19  = 2 ( b-19)          or   y-2b = - 57 

                            subtract top equation from bottom to get     - b = -73    or        b = $ 73