3x + 5y = 7
4x + 3y = 2

both x and y have to be the same numbers!

Graph the system: f(x)= 3/x-2; f(x)= 1/2x + 2

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?

For what value of (y) is 3^3/3^y =1/9