WILL GIVE BRAINLIEST! NEED FAST! A store advertisement states that all flat screen TVs that cost over $1000 are marked down $514. The TV you want to purchase is $1800. Which equation can be used as a first step in finding the percent of the retail price that will be saved at this sale?

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?

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%