What are the requirements for an experiment to be able to show that changes in one variable cause changes in another? (4 points) I will give brainiest
and will report people with absurd answers

x= cost per bracelet

number of bracelets * x + shipping charge = total cost

so

9x+9=72

answer: it is 8

step-by-step explanation:

you know why its 8

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.