Functions A and B give the population of City A and City B, respectively, t years since 1990. In each function, population is measured in millions. Here are the graphs of the two functions
Which function value is greater: A(4) or B(4)?
Are there one or more values of t which the equation A(t) = B(t) is true? If so, which one or which ones?
Identify at least two values of t at which the inequality B(t) < A(t) is true.

The accompanying normal probability plot was constructed from a sample of 30 readings on tension for mesh screens behind the surface of video display tubes used in computer monitors. does it appear plausible that the tension distribution is normal? the given probability is has a significant downward curve, so it is plausible that the tension distribution is normal. the given probability is has a significant downward curve, so it is not plausible that the tension distribution is normal. the given probability is quite linear, so it is plausible that the tension distribution is normal. the given probability is has a significant upward curve, so it is not plausible that the tension distribution is normal. the given probability is quite linear, so it is not plausible that the tension distribution is normal.