What multiple of 8 is also a factor of 8?

Which is the graph of the function y=2(4)^x

This question awards 100 ! i really don’t want to fail i will also mark you !

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?