# SOLUTION: Please show me how to solve this problem find f(-3) if f(x)= 2x-1

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 Question 9342: Please show me how to solve this problem find f(-3) if f(x)= 2x-1Answer by rapaljer(4667)   (Show Source): You can put this solution on YOUR website!f(x) = 2x - 1 First, this is a special notation that does NOT mean f times x. It is a special notation that is read "f of x", and it means that you are to substitute a value of x into this formula and simplify the result to find the value of the answer. It is MUCH easier than everyone can possibly imagine. Given f(x) = 2x - 1 f(-3) means that you sustitute the value of -3 in place of the x value(s). f(-3) = 2(-3) - 1 f(-3) = -6 -1 = -7 You didn't ask for it, but if you need another example, suppose you wanted to find f(9) or f(-7). f(9) = 2(9) - 1 = 18-1 = 17 f(-7) = 2(-7) - 1 = -14 -1 = -15 R^2 at SCC