Write a polynomial to express the total value of p $20 bills, q$10 bills, and r $5 bills. So what's the value of p$20 bills? Well if I have p $20 bills, the value of each of those dollar bills is going to be$20. So the value all p of them is going to be 20p. If I have one $20 bill, it's$20. If I have three $20 bills, if p is 3, it's going to be$60. Actually, let me do that in the same color as I underlined it. I underlined it in yellow. So let me do the p $20 bills. So 20p is the p$20 bills. Then you have your q $10 bills. So what's the value of those? Well it's going to be 10q. If I have one$10 bill, it's worth $10. If I have ten$10 bills, if q is 10, this is going to be worth 10 times 10. $100. And then finally you have your r$5 bills, which are going to be worth 5r dollars. One $5 bill, worth$5. Two $5 bills, worth$10. And we're done. We've expressed it as a polynomial. Polynomial just means that we have multiple terms here and this is three terms. We could even call it a trinomial. Polynomial is a more general term for more than one term.