The answer is going to be yes it's rational. hope that helped
Answer:

Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form
or 
In this problem we have
y=18 when x=2
Find the value of the constant of proportionality k
----> 
therefore
The equation is equal to

Answer:
$2.05
Step-by-step explanation:
$8/4 notebooks= $2
.20/4=.05
________________
$2.05
The red triangle and the green rectangle are 14
The purple triangle and blue square are 16
Triangle is
(1/2)*Base*Height