Answer:
10x-40
Step-by-step explanation:
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Answer:
f(3) = - 9
Step-by-step explanation:
To evaluate f(3) , substitute x = 3 into f(x) , that is
f(3) = - (3)² = - 9
Answer:

Step-by-step explanation:
Given

Required
Find x
When the result is 4.4, we have:

This gives:

Divide both sides by 2

Square both sides


When the result is 4.5, we have:


Divide both sides by 2

Square both sides


So, the value of x is between 4.84 and 5.0625
i.e.

The only integer between the above interval is 5.
Hence:
