SOLUTION: For each function, find f(-2), f(3), and f(7). 1. f(x)= 5x + 2

Algebra ->  Trigonometry-basics -> SOLUTION: For each function, find f(-2), f(3), and f(7). 1. f(x)= 5x + 2      Log On


   

Question 119980This question is from textbook Prentice Hall Mathmatics
: For each function, find f(-2), f(3), and f(7).

1. f(x)= 5x + 2 This question is from textbook Prentice Hall Mathmatics

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

Let's evaluate f%28-2%29


f%28x%29=5x%2B2 Start with the given function.


f%28-2%29=5%28-2%29%2B2 Plug in x=-2. In other words, replace each x with -2.


f%28-2%29=-10%2B2 Multiply 5 and -2 to get -10


f%28-2%29=-8 Now combine like terms


-----------Now let's evaluate another value---------


Let's evaluate f%283%29


f%28x%29=5x%2B2 Start with the given function.


f%283%29=5%283%29%2B2 Plug in x=3. In other words, replace each x with 3.


f%283%29=%2B15%2B2 Multiply 5 and 3 to get 15


f%283%29=17 Now combine like terms


-----------Now let's evaluate another value---------


Let's evaluate f%287%29


f%28x%29=5x%2B2 Start with the given function.


f%287%29=5%287%29%2B2 Plug in x=7. In other words, replace each x with 7.


f%287%29=%2B35%2B2 Multiply 5 and 7 to get 35


f%287%29=37 Now combine like terms