If 3x-4y=9, then x equals

a. 3-4y

b. 9-4y

c. 9+4y/3

d. 9-4y/3

George is helping the manager of the local produce market expand her business by distributing flyers around the neighbourhood. He gets paid $20 a day as well as $0.05 for every flyer he distributes. George would like to earn at least $65 each day. Which of the following represents this situation, where x is the number of flyers distributed.

20+0.05x65

20+5x65

20+0.05x65

20+5x65