3. Simplify the expression: 1+4(2x – 3) - x
A. 9x - 3
B. 9r - 15
C. 7x-2
D. 7x - 11

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

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?

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line