What is a rational number? square root of 15, square root of 16 square root of 17, square root of 18

B.

Step-by-step explanation:

We have been given 4 numbers. We are asked to find the rational number from our given choices.

We know that a number is a rational number, when it could be written as a fraction.

Let us check our given choices one by one.

A.

Since our given number has non-terminating decimal, therefore, is not a rational number.

B.

Since our given number is an integer and we can write it as a fraction , therefore, is a rational number.

C.

Since our given number has non-terminating decimal, therefore, is not a rational number.

D.

Since our given number has non-terminating decimal, therefore, is not a rational number.

the graph in the attached figure

step-by-step explanation:

we have

using a graphing tool

the graph in the attached figure

the roots are ( x-intercepts) x=-0.5,x=1,x=3

the y-intercept is the point (0,3)