Answer:
The diagram presented on Third expresses the graph of

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The answer is 22 I looked it up to make sure i was right
(-0.75,0)-(0,3) is the answer
18 = 2x + 4
2x = 14
x = 7
answer
first line: 1st box: 18 and 2nd box: 4
second line: $7 an hour