Gus and ken are placing tea ideas for their friends Gus orders 8 large cups ken orders 2 fewer large than Gus ken pays for his order with a $100 bill ken wants to know how much he spent on tea

i hope this is what you were looking for.

see attached graph

i use my brain for prombles like this maybe you could try it

step-by-step explanation:

graph #4 (last graph) depict the function   f(x)= -m(x-d)^1/5 i

step-by-step explanation:

we know that

m=slope

but in this function slope is -m that means slope is decreasing and it is decreasing by 1/5 points down the x-axis.

which is shown in graph four

a decreasing slope down x-axis by 1/5 points.

hence 4th graph is the right option for this.