Jason said there are two ways to solve the equation 3x + 15 = 24 Part A. Are both strategies correct? Explain.

Part B. How do you know when you can divide first?

Part C. Solve this equation in two ways: 5x + 20 = 5

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?