Answer:
Step-by-step explanation:

Amy would have spent $22.5 on her books (assuming you meant $10 total, not $10 per book)
Answer:
the fastest is 12 meters every 4 seconds
slowest is 8 meters every 6 seconds
Step-by-step explanation:
Answer:
a=3
b=-5
c=2
Step-by-step explanation:
Because first arrange them in decreasing order by their variables powers like this 3x²-5x+2 after that take the the coefficients