anonymous
  • anonymous
If anyone could please help, I've been working on these functions for three days! I really need to understand these concepts so please show work. Question 1: If f(x) = 7x - 5 show how we find f( 8) Question 2: If f(x) = 7x - 5 show how we find f(x) = - 3
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
In first eq just punch in 8 for x.
anonymous
  • anonymous
thank you for your response, but I've already tried that and I was told the answer was wrong -.-
anonymous
  • anonymous
So what are you working on? Did your teacher say it was wrong? It is in a book? The question is worded oddly 'show how we find...'

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anonymous
  • anonymous
she's implying f(x)=8...so I need to solve for x. I've looked in the textbook and solved the problem by the examples but she still tells me it's wrong. I don't know what can be plugged in for x to make the equation work...
anonymous
  • anonymous
OK so set 7x-5=8 and solve for x
anonymous
  • anonymous
ok, thank you for your help (:

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