Marshall, hank, and jean are all cousins. marshall is 3 years older than hank. hank is twice the age of jean.

a) write expressions to represent the ages of the cousins. assign the variable j to represent jean.

b) if jean is 12 years old, how old are the other cousins?

c) if hank was 14, how old would jean be?

What properties allow transformation to be used as a problem solving tool

The graph of y = ax^2 + bx + c is a parabola that opens up and has a vertex at (0, 5). what is the solution set of the related equation 0 = ax%2 + bx + c?

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?