Answer:
It becomes 30
Step-by-step explanation:
When you double a number, it’s increases to two of itself .
So double of 15 means 15 x 2
= 30
X=0. Y=-2. There is only one x value for this question.
A positive × A negative = Negative
A positive × A positive = Positve
A negative × A negative = Positive
320 gallons i guess theres not much question here