Larry has 19.8 gallons of paint. If it takes approximately 1.32 gallons to paint a room, how many rooms can he painted?
A. 19 rooms
B. 17 rooms
C. 15 rooms
D. 13 rooms

C?

Step-by-step explanation:

19.8/1.32 = 15

the answer is C

Step-by-step explanation:

If you divide 19.8 by 1.32 then you get exactly 15

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:

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