Out of every $15 Krista earns she saves $3.00. How much money would she have earned if she saved $21?

krista would have earned 70  dollars

Step-by-step explanation:

first do how much she saved ($21) divided by the $3 she takes out of every $15

you end up with 7. you would slap a big phat 0 on the end, and boom, you have your answer. $70

hope this helps,

                       noah

the graph on the bottom right

the direct variation says that:

then the equation is of the form is given by:

            where k is the constant variation.

from the given table:

consider any value of x and m(x)=y

x = 2 and m(x)=y = 3

substitute these value in [1]; we have;

divide both sides by 2 we get;

⇒

check:

put x = -1 and m(x) = -1.5

substitute in the equation:

-1.5 = -1.5                   true

therefore, the function m(x) represents a direct variation

graph of this function as shown below: