Irrational would be the correct answer
to find the inverse exchange the x and y and then solve for y
y =2x^2
x =2y^2
divide by 2
x/2 = y^2
take the square root of each side
sqrt(x/2) =y
the inverse of y =2x^2 is sqrt(x/2)
percent discount = (discount)/ original * 100
= (20)/250 * 100
=.08*100
= 8 percent
He got an 8 percent discount
Answer:

Step-by-step explanation:
Let w and l be the width and length of the garage.
Let
and
be the area of garage at present and new garage.
Given:
The area of the garage at present

And he planed to tripling the dimensions of the garage.
We need to find the area of the new garage.
Solution:
We know the area of the rectangular garage.


---------------(1)
The dimension of the new garage is triple, so the area of the new garage is.


Substitute
from equation 1.


Therefore, the area of the new garage 