It costs the school band ss dollars per sandwich that they make. the band sells each sandwich for 20\%20% more than it costs to make so they earn a profit. the expression 73(s+0.2s)73(s+0.2s) describes how much money the school band received selling sandwiches at their last fundraiser.

Money Required for making 1 Sandwich that is Cost Price of 1 Sandwich = S Dollar

Selling Price of 1 Sandwich = 20 % more than Cost Price S

                    = S + 20 % of S

                     =

                     =$ 1.20 S

                      = $(S + 0.20 S)

Selling Price of 73 Sandwiches = $ 73 (S + 0.20 S)

The expression $73(S+0.2 S) →→  Selling Price of 73 Sandwiches          

6 spoons of sugar for every 21 cups of flour

step-by-step explanation:

the functions have the same rate of change i think. i narrowed it down to this answer and "the rate of change of tour 1 is greater" but i got it wrong using that answer so im assuming its the answer above. (this is a question i also answered from the iready site if anyone needs a reference)