How many meatballs are required for a party of
25 adults and 5 children?
Frank has devised a formula for his
catering business that calculates the
number of meatballs he needs to
prepare.
Enter the correct answer.
DONE
The formula is m = 4a + 2c, where c =
number of children; m - number of
meatballs; a = number of adults.

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:

x/3-10=8

x/3=18

x=48