1. You are given the dollar value of a product in 2015 and the rate at which the value of the product is expected to change during the next 5 years. Write the linear equation that gives the dollar value V of the product in terms of the year t. (Let t = 15 represent 2015.)
2015 Value Rate
$176 $6.50 increase per year
2. The median player salary for a professional football team was $462,500 in 2000 and $1,347,848 in 2008. Write the linear equation giving the median salary y in terms of the year x. (Let x = 0 represent 2000.)
Use the equation to predict the median salary in 2013. (Enter your answer to two decimal places.)
3. In 1990, a university had an enrollment of 74,360 students. By 2009, the enrollment had increased to 86,187.
(a) What was the average annual change in enrollment from 1990 to 2009?
(b) Use the average annual change in enrollment to estimate the enrollments in 1995, 2000, and 2005.
(c) Write the equation of a line that represents the given data. (Enter your answer in terms of the year t, where t = 0 corresponds to 1990. Use the rounded slope from part (a).)
What is its slope?
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