How do know if you can divide a number by 3. is there a pattern?

Which graph represents an even function?

Create a question with this scenario you could ask that could be answered only by graphing or using logarithm. david estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x.

X+y=-4 x-y=2 use elimination with adding and subtraction