Mathias and Roman are discussing how to simplify the following expression: . They are writing an equivalent expression before and after combining like terms. Select all the possible solutions they obtained in the process.

And employee salary increased by $4500 which represents a 15% raise what is the rate of the increase

Which interval for the graphed function contains the local maximum? [–3, –2] [–2, 0] [0, 2] [2, 4]

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?