Kristin and Jill are selling fruit for a school fundraiser Customers can buy small boxes of grapefruit and large boxes of grapefruit. Kristin sold 3 small boxes of grapefruit and 9 large

boxes of grapefruit for a total of $99. Jill sold 12 small boxes of grapefruit and 10 large boxes of

grapefruit for a total of $162. How much does one small box of grapefruit cost?

$27.5

step-by-step explanation:

$110.00 divided by 4

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:

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500