Answer:
n= 4f/5+90
Step-by-step explanation:
f= 5(n−90) /4 (simplify)
f * 4=5(n−90) (multiply 4 on both sides)
4f=5(n−90) (regroup)
4f/5 =n−90 (divide 5 on both sides)
4f/5 +90=n (add 90 to both sides)
here
f(x)=x^2+6
Now
Replacing the value of x
f(3x)=3x^2 +6
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Your answers are right
hope you got a good grade o whateva
im just trna get more questions
