Help neeed it right if not ill get beat

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

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?