Which expressions are polynomials?

select each correct answer.

6 + w

2x4−y

z + 1

y2−y√3+4

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

(x-5)1/2+5=2 what is possible solution of this equation

Aadc is formed by reflecting aabc across line segment ac, as shown in the figure. if the length of ac is 4 units, the area of aadc is square units.