1.in the solution of the equation 5 + 3x = -2x + 9, 2x is added to the equation first. which of the following should be done next?
a. add -9
b. add -5
c. add -3x

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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?

Find the domain and range of the following function f(x) = 51x - 21+ 4