If f(x) = 2×2 + 4, find f(3).?

7 Answers

• f(3) = 2(3)^2 + 4 = 2*9 + 4 = 22

  A) 22

• 2(3^2)+4 is 2(9)+4 18+4 22 if for some reason

  You meant 2(3)(2)+4 you get 4(3+4 and that equals 16 so if the x is squared answer is 22 if x is being multiplied by 4 which you wrote as 2×2 then answer is 16

• f(x) = 2x^2 + 4

  f(3) means putting 3 instead of x in the previous equation

  f(3) = 2· 3^2 + 4 = 2· 9 + 4 = 18 + 4 = 22

• Replace x with three and count.

  2(3)^2 +4

  2*9+4=22

  A)

• f (x) = 2x² +4

  f(3) =2(3)² +4 = 22

  A is correct

• Just plug 3 in for the x in the function,

  You should get A. 22

• f(x) = 2×2 + 4

  f(3) = 232 + 4

  Complete the calculation yourself.