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anonymous
 one year ago
Consider the function f(x) = x2 + 3x − 7. Find the value of f(x) when x = 3 and select the correct answer below.
A. 5
B. 8
C. 11
D. 18
anonymous
 one year ago
Consider the function f(x) = x2 + 3x − 7. Find the value of f(x) when x = 3 and select the correct answer below. A. 5 B. 8 C. 11 D. 18

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Please help with this, I don't understand

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2everywhere you see an 'x' replace it with 3 (since x = 3) \[\Large f(x) = x^2 + 3x  7\] \[\Large f(\color{red}{x}) = (\color{red}{x})^2 + 3(\color{red}{x})  7\] \[\Large f(\color{red}{3}) = (\color{red}{3})^2 + 3(\color{red}{3})  7\]

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2now either use pencil/paper or a calculator to evaluate \(\Large (3)^2+3(3)7\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thank you but I still don't know how to evaluate it afterwards, my math is a little rusty

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2you can use pencil/paper or you can use a calculator http://web2.0calc.com/

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2two things to keep in mind 1) type `^` to mean exponent example: 9 squared = 9^2 2) something like `3(3)` means `3 times 3`. The number next to the parenthesis implies multiplication
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