Tina saves 10% by picking up her pizza rather than having it delivered. She orders 3 large pizzas and each costs $12.45. How much will she save on her total bill by picking up her order?

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?

Do you mind if you guys me with this question i’m on number 8

State one method by which you can recognize a perfect square trinomial.