Determine if the expression 4b^4+c+ c^3 is a polynomial or not. If it is a polynomial, state the type and degree of the polynomimal.

Iam so stuck. what is the worked out answer for this question?

What is the perimeter of trapezoid jklm? + units 2 + + units 9 + units 9 + + units

Two streets intersect at a 30- degree angle. at the intersection, the are four crosswalks formed that are the same length. what type of quadrilateral is formed by the crosswalks?