Kelly spends $ 77.79 on items for a party . she buys you cards that cost $ 7.79 ( including tax ) . she also buys gift bags that cost $ 10.00 each . if she buys one gift bag for each guest , how many guests did kelly invite to the party ?

a ( 10
b ( 7
c ( 5
d ( 8

An unknown number x is at most 10. which graph best represents all the values of x? number line graph with closed circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the left. number line graph with closed circle on 10 and shading to the left.