Which polynomial correctly combines the like terms and expresses the given polynomial in standard form? 9xy3 â€"" 4y4 â€"" 10x2y2 x3y 3x4 2x2y2 â€"" 9y4 â€""13y4 3x4 â€"" 8x2y2 x3y 9xy3 â€""13y4 x3y â€"" 8x2y2 9xy3 3x4 3x4 â€"" 8x2y2 x3y 9xy3 â€"" 13y4 3x4 x3y â€"" 8x2y2 9xy3 â€"" 13y4.

If a =6, what is the value of 2a(3b + 5c)?

Acircular city park has a sidewalk directly through the middle that is 111 - feet long. if each bag of fertilizer covers 50 square feet, then determine how many bags of fertilizers the parks and recreation department needs to use to cover the circular park. ignore all the sidewalks around and through the park.

Asurvey of 45 teens found that they spent an average of 25.6 hours per week in front of a screen (television, computer, tablet, phone, based on the survey’s sample mean, which value could be the population mean? 2.3 hours 27.4 hours 75.3 hours 41.5 hours