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15% of 80 is 12, so he got $12 in tips
so the total amount of money earned should be $92 dollars
Y intercept is -6
Y= 5x^2-X-6
Y= 5(0)^2-0-6
Y= 0-0-6
Answer:
9x2−x4+y(x2+9)2x(x2+9)2
Step-by-step explanation: