The 2nd one is NOT a function.
Answer:
Hi! The answer to your question is f(1)=-4
Step-by-step explanation:
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Answer: x=1 or x=-3
Step-by-step explanation:
Quadratic formula is 
a=1 b=2 c=-3
Substitute

Answer:
sorryyyyyy dont knowwwwwwww
Answer:
I believe the unit rate is 48 dollars per tire.