Question 9 (2 points) 9.) Which phrase best explains why Mason "showed his teeth" to the tourist who tips him?
to thank the tourist in an insincere way
to show the tourist that the tip was too generous
to thank the tourist without having to stop playing
O to show the tourist that he felt embarrassed

To thank the tourist without having to stop playing

the italian poet francesco petrarch did! (:

substitute y = 2x - 4 to x + 2y = 12:

x + 2(2x - 4) = 12     use distributive property

x + (2)(2x) + () = 12

x + 4x - 8 = 12     add 8 to both sides

5x = 20     divide both sides by 5

x = 4

put the value of x to the first equation:

y = 2(4) - 4

y = 8 - 4

y = 4