Students can buy up to 10 books at a book fair. The cost of the books is shown in the graph. What is the domain of this graph?
Cost of Books
110
10
80
70
2345 6789 10 11
Number of books

C. All whole numbers from 0 to 10

Step-by-step explanation:

Options:

A. All nonnegative real numbers

B. All rational from 0 to 10

C. All whole numbers from 0 to 10

D. All real numbers

Given:

A student can not buy more than 10 books.

The domain is the x-axis which is the number of books.

You can not buy half or a fourth of a book.

Nonnegative real numbers  would include 0.1, 0.2, 0.3, 0.4, 1.5, etc.

Rational numbers from 0 to 10  would include integers, fractions, and repeating decimals which include 1/3, 2/4, 3/4, 6/5, etc.

Whole numbers from 0 to 10 would include integers and a rational.

Real numbers include negative number, but the students are not selling books.

step-by-step explanation:

consider the parallelogram shown in the attached image.

in the parallelogram hijk, the length of hk is given as,

from the properties of parallelogram we know that the opposite sides of a parallelogram are parallel to each other and are equal in measure.

therefore, the length of the side ij must be equal to the length of the side hk and that is .

hence, the expression for the length of ij confirms that hijk is a parallelogram.