1. Oranges and apples are on sale at Wal-Mart. Oranges are $4.00 per bag and apples are $2.00 per bag. You decide to purchase a total of seven bags of fruit and you spent $20.00 total. How many bags of oranges did you buy and how many bags of apples did you buy?

c

step-by-step explanation:

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:

answer for #1 is c

answer for #2 is d

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