Need ! 80 points! (sike)

at the airport, ten people are waiting on standby. two seats become available, one first class and one coach. how many ways are there to fill the two seats?

a. 10
b. 20
c. 45
d. 90

What is the vertex form of f(x) = x2 + 6x + 3

Michelle had a birthday party. she bought a bag of candy with 96 starbursts, 72 hershey's, and 68 reese's. she wants to use all the candy she bought to make goody bags with the same amount of starbursts, hershey's and reese's in each bag. what is the largest number of bags she can make?

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?