At a particular music store, cds are on sale at $14.00 for the first one purchased and $12.00 for each additional disc purchased. maria spends $86.00 on cds. how many cds has maria purchased?

6
7
8
9

7 CDs has been purchased.

Step-by-step explanation:

Given,

For the first CD, cost = $ 14.00,

Let x be the additional number of CD purchased by Maria,

That is, total purchased CD = x + 1,

Now,  for each additional CD, cost = $ 12.00,

So, the cost of x additional CD's = 12x dollars,

And, the total amount of the CDs = (14 + 12x) dollars

According to the question,

Total cost = $ 86.00

⇒ 14 + 12x = 86

⇒ 12x = 86 - 14 = 72

⇒ x = = 6

Hence, the total number of CDs purchased = 6 + 1 = 7.

answer;

the correct answer

just use google you beautiful person.

have a nice day < 3

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.