56.6k views
5 votes
If f(x) = -3x - 5, find f(-2): A. -1 B. -4 C. 1 D. 4

1 Answer

5 votes

Alright, let's take a look at the question. We are given that the function f(x) equals -3x - 5. However, the question doesn't want us to find f(x), rather it wants us to find f(-2). No worries, this is still simple to find.

We just need to replace every mention of x in the function with -2 and then calculate the result. Let's complete this process.

f(x) = -3x - 5 subtitute the x with -2;

f(-2) = -3*(-2) - 5

When a negative sign is applied to a negative number, the two negatives cancel each other out and the number becomes positive. So -3 multiplied by -2 will become 6.

f(-2) = 6 - 5

Now, the final step, we just need to subtract 5 from 6.

f(-2) = 1

So, the answer is C: 1 which is the result of the function f(x) when x = -2.

Answer: C. 1

User Hunter Larco
by
7.0k points