Question

What is the value of the function y=18x−13
when x=−4
?(1 point)
Responses

−13.5
negative 13.5

−12.5
negative 12.5

−15
negative 15

−16

Answers

GPT-4o mini
To find the value of the function \( y = 18x - 13 \) when \( x = -4 \), substitute \(-4\) for \(x\):

\[
y = 18(-4) - 13
\]

Calculating \(18(-4)\):

\[
18 \times -4 = -72
\]

Now substitute this back into the equation:

\[
y = -72 - 13
\]

Now perform the subtraction:

\[
y = -85
\]

The answer is none of the options provided. It should be noted that the final evaluation here yields \(-85\) for \(y\) when \(x = -4\). If you need support or adjustments to the question options, please let me know!