Question

F(x) = 3x + 2
What is f(5)

Answer 1

f(5) = 17

Explanation:

Let's evaluate the function for f(5)

• 
  `\rm{f(x)=3x+2}`

Insert 5 everywhere x appears:

• 
  `\rm{f(5)=3(5)+2}`

• 
  `\rm{f(5)=15+2}`
• 
  `\rm{f(5)=17}`

Therefore f(5) = 17

Answer 2

Explanation:

to find f(5) in f(x) , just put in '5' where 'x' is in the equation

f(5) = 3 (5) + 2 = 17