Use the following functions to solve the practice problems. f(x) = 2x – 1
g(x) = 3x
h(x) = x2 + 1
1. f(g(-3)
2. f(h(7))

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

The measure of an angle is 117°. what is the measure of a supplementary angle?

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?