Answer: 
Step-by-step explanation:
A quadratic function is as following; 
Notice that it cannot be
because if you solve;
which eliminates the
.
9-5=4 Therefore f=4
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Answer:
20cm rounded to the nearest tenth is 20cm
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Answer:
Step-by-step explanation:
4x^2 is the quadratic
3x is linear
-6 is the constant.
Answer:
52
Step-by-step explanation: