For the function, f (x) = 2x + 1. If f (x) = 3, what is the value of x?

For functions, the two notations mean the exact same thing, but "f (x) " gives you more flexibility and more information. You used to say "y = 2x + 3; solve for y when x = - 1". Now you say "f (x) = 2x + 3; find f (-1) " (pronounced as "f-of-x equals 2x plus three; find f-of-negative-one").

Step-by-step explanation:

For functions, the two notations mean the exact same thing, but "f (x) " gives you more flexibility and more information. You used to say "y = 2x + 3; solve for y when x = - 1". Now you say "f (x) = 2x + 3; find f (-1) " (pronounced as "f-of-x equals 2x plus three; find f-of-negative-one").