Gabriela's phone battery drained at a constant rate. The power level of the battery, y, after x minutes is y=−0.5x+72. What are the slope and y-intercept of the line represented by this equation?

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?

Ineed with angles and the measure of them i have abc a is 65 and b is (3x-10) and c is (2x) find the value of x

Eric drove 275 miles in 5 hours. at the same rate how long would it take him to drive 495 miles?