Samuel orders four DVDs from an online music store. Each DVD costs $9.06. He has a 25% discount code, and sales tax is 7%. Round sales tax amounts to the nearest cent. What is the total cost of his order?

$29.08

Step-by-step explanation:

THERE ARE 2 WAYS OF DOING THIS. THE SAME RESULT!

If you have the discount then the tax

4 DVDs=$36.24

Discount is 25% or 1/4

$36.24/4=9.06 is the discount.

$36.24-$9.06=$27.18

then we do the tax.

27.18*7/100=1.90 *rounded*

$27.18+$1.90=29.08

OR

if you have the tax first then the discount

4 DVDs=$36.24

Tax=36.24*7/100=2.53 *ROUNDED*

36.24+2.53=$38.77

Discount is 25% or 1/4

38.77/4=9.69 *ROUNDED*

$38.77-$9.69=$29.08

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: c

because if you look at the chart you can see a pattern and compare it to the question he simplify out your

but i think the formula is f(x)=6x