Consider the data set below. x 4 2 8 5 7 4
y 6 6 6 8 8 6

For a hypothesis test, where H0:β1=0 and H1:β1≠0, and using α=0.05, give the following:
(a) The test statistic
t=

Do some research and find a city that has experienced population growth. determine its population on january 1st of a certain year. write an exponential function to represent the city’s population, y, based on the number of years that pass, x after a period of exponential growth. describe the variables and numbers that you used in your equation.

Find the domain of the following expression: 1/(√x)-2

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?