]its actually y=2^x2-4x-16 not y=2x2-x-16......I wouldn’t be surprised if you got the answer wrong too.
Answer: look at the picture
Step-by-step explanation: Hope this help :D, Can I have a Brainliest I really needed it please
Let's call the number we're looking for . We know that is twice as much as .
Twice as much as a number simply means the double of that number, and in turn the double of a number means to muliply that number by 2.
So, in order to obtain , you have to multply by 2. In formula, you have
or simply