They are always rational numbers
Answer:
12 girls
Step-by-step explanation:
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we are given
For finding inverse function , we do following steps
step-1:
Set f(x)=y
step-2:
Switch x and y
step-3:
now, we can solve for y
Multiply both sides by 9y-2
Add both sides by 2x
now, we can divide both sides by 9x
so, we get inverse function as
................Answer
True
work: f(3)=2(3)-9
f(3)=6-9
f(3)=-3