For making a scatter plot of the data set, which would be the best scale and interval for the axis that represents the amount of fluoride? Water (L) 0.5 08 2 1.5 0.5 25
Fluoride (mg) 0.4 0.4 0.6 1.6 0.8 0.2 1.8

0 to 5 with intervals of 0.1
1 to 2.5 with intervals of 0.5
0 to 2 with intervals of 0.2
1 to 3 with intervals of 1

If f(x) = -5x + 1 and g(x) = x3, what is (gºf)(0)? enter the correct answer

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

Real gross domestic product: a) will increase if the price level increases. b) can change from one year to the next even if there is no change in output. c) will increase if the level of output increases. d) is a measure of inflation.