Glenda and fiero are at a restaurant eating a meal that costs $30. they have a discount coupon that gets them 10% off the cost. if they pay the waiter a tip of 8% of their bill, how much are they spending on dinner including tip?

incomplete question. how do you expect anyone to you when you do not post the question in its entirety?

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: