The answer is D. 15 plz give me brainliest answer
Answer:
just remember this:
negative x negative = positive
positive x positive = positive
postive x negative = negative
negative x postive= negative
lookon bbcbitesize for adding negatives and positive rule
The answer is 15.
That's because the function rule is to apply 5 multiplied by whatever x is, and if x is 3, you do 5 multiplied by 3, which is 15.