When using a vertical number line do the negative numbers go on the bottom or top?

Which number is irrational? a) 16 b) 18 c) 25 d) 36

Restrictions on f(x) = 1/x+5 and g(x) = x-2

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 ?