Which word describe a polygon with all congruents sides and all congruent angles

Ineed if you could explain and give me the answer you! this needs done

What is coefficient of the term of degree of degree 5 in the polynomial below

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.