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Valentin [98]
3 years ago
15

What is f(-3) for the function f(x) = -5x - 7? ​

Mathematics
1 answer:
sergij07 [2.7K]3 years ago
7 0
F(x) = -5(-3) - 7
15 - 7
f(-3) = 8
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Using the distributive property is the correct first step. (4x+6) is being multiplied by -1, so distributing gives

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Now, using the associative property of addition, you get

-5-x=(2x+(-4x))+(-6)
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Add 5 and 2x to both sides.

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On the left side, use the associative property. On the right, commutativity and associativity:

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