Identify the inequility graphed on the number line

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)