To find [tex]\( f(-15) \)[/tex] given the function [tex]\( f(x) = 4x \)[/tex], follow these steps:
1. Identify the function and the input value:
- The function is [tex]\( f(x) = 4x \)[/tex].
- The input value is [tex]\( x = -15 \)[/tex].
2. Substitute the input value into the function:
- Replace [tex]\( x \)[/tex] with [tex]\(-15\)[/tex] in the function [tex]\( f(x) \)[/tex].
3. Perform the multiplication:
- Calculate [tex]\( 4 \times (-15) \)[/tex].
4. Compute the result:
- The product of [tex]\( 4 \)[/tex] and [tex]\(-15\)[/tex] is [tex]\(-60\)[/tex].
5. State the final answer:
- Therefore, [tex]\( f(-15) = -60 \)[/tex].
So, [tex]\( f(-15) = -60 \)[/tex].
