Which expression is equivalent to (5x – 3)(x – 3)? A. 5x2 – 18x + 9
B. 5x2 – 18x – 9
C. 5x2 – 12x + 9
D. 5x2 – 12x – 9

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?

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.

A6 ounce bottle of dressing costs $1.56 a 14 ounce bottle costs $3.36 a 20 ounce bottle costs $5.60 which has the lowest cost per ounce