Which expressions are polynomials?
z + 1

y2−y√3+4

2x4−y

6 + w

Cam bought some used books for $4.95. he paid $0.50 each for some books and $0.35 each for the others. he bought fewer than 8 books at each price. how many books did cam buy?

Select the lengths in centimeters that would form a right triangle

Find the y-intercept and x-intercept for the equation 5x-3y=60 what is the y-intercept