Given that f(x)=2x-5 calculate the value of f(-2)

To solve this question, we must evaluate the function f(x) for an x value of -2.  What this means is we must replace each variable "x" in the f(x) equation with a (-2) and evaluate.

f(x) = 2x - 5

Replace each variable x with the x-value -2.

f(-2) = 2(-2) - 5

To simplify, we should first use multiplication, as outlined by the order of operations (PEMDAS) - parentheses first, exponents next, then multiplication and division, and finally addition and subtraction.

f(-2) = -4 - 5

Finally, we should compute the subtraction on the right side of the equation.

f(-2) = -9

Therefore, your answer is -9.

Hope this helps!

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