C. For each hour he works, his earnings go up by $8.
If you mean -1/3x try using y=3x
K = 100/9, or approximately 11.111
Answers: A, C, D
Explanation: Let (x-3)=0. x then equals 3. Substitute f(3) into each equation, and the ones which equal 0 are the answer.
Step-by-step explanation:
