F(x) = 2x' + ar? + bx - 6 where a and b are constants.
When f(x) is divided by (2x - 1) the remainder is -5.
When f(x) is divided by (x + 2) there is no remainder
(a) Find the value of a and the value of b.
(b) Factorise f(x) completely.

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

Write as a product of two polynomials. 2(3–b)+5(b–3)^2

Twelve different video games showing substance use were observed and the duration times of game play (in seconds) are listed below. the design of the study justifies the assumption that the sample can be treated as a simple random sample. use the data to construct a 99% confidence interval estimate of μ, the mean duration of game play. 4028 4316 4816 4650 4036 5010 4833 4331 4307