The customs duty on imported vehicles is 25% of the imported price. (a) Calculate the customs duty on a car for which the imported price is $16800.

Hello there!

First, we must define the words "leading coefficient" and "constant."

Take a look at the simple definitions...
Leading coefficient- the number behind the term with the highest exponent
Constant- the number without any variable in front of it

This means that for the polynomial
5x+2-3x^2 the leading coefficient is -3 because it is the number behind the term with the highest exponent! The constant is 2 because there are no variables behind it.

I really hope this helps!
Best wishes :)