Answer:

Step-by-step explanation:
If you foil this equation you will get:

And by dividing it, you will get;

That is your answer!
F(5)= 3.(5)+2=15+2=17
Another example: F(0)=3.(0)+2=0+2=2
You just replace the value in the two sides.
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9.5:12.6
That is the answer, btw the 6 is repeating
No decimal can be whole number but the rational number
There is a 25% decrease because the decrease is 30, which is 25% of 120.