Which of the following are polynomials?

I think all of them are polynomials since they are all a combination of terms. A binomial is also a polynomial since "poly" means many. Hence, a binomial is a polynomial, too.

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

happy to

pls mark as brainliest

i think the amount would be $140.62