When you post a picture on social media, it seems your friends randomly “like” the picture. Independent of the quality or the humor of the photo, there seems to be a 16.1% chance of the picture being “liked” for any given picture. Let X represent the number of pictures and post until one is “liked.” Find: Mean(x):
Standard Deviation(x):
P(X=7):
P(X<17):
P(X>15):
P(11≤X≤16):

Which situation can be modeled by the inequality 5 + 10w ≥ 45? a. you start with $5 and save $10 a week until you have at least $45. b. you start with 5 baseball cards and purchase 10 cards every week until you have at most 45 cards. c. you start with 5 water bottles and purchases cases of 10 water bottles each until you have a total of 45 water bottles. d. you spend $5 plus $10 per week until you have less than $45.

20 solve 2(4 x + 3) < 5 x + 21. a) { x | x < 9} b) { x | x > -5} c) { x | x > -9} d) { x | x < 5}

1. evaluate 8x(2)y9(-2) for x=-1 and y=2 2. simplify the equation. -() 3. simplify the expression. [tex]\frac{5}{x(-2) y9(5)}[/tex]