From 1986 to 2012, the number BB of federally insured banks could be approximated by B(t)=−324.8t+13709B(t)=-324.8t+13709 where t is the year and t=0 corresponds to 1986.How many federally insured banks were there in 1991?    Find the slope of the graph of B. Interpret this slope as a rate of change. Choose the correct answer below. The number of banks decreased by 13709 banks per year The number of banks increased by 12085 banks per year The number of banks increased by 13709 banks per year The number of banks decreased by 12085 banks per year The number of banks increased by 324.8 banks per year The number of banks decreased by 324.8 banks per year Find the y-intercept of the graph of B.The y-intercept is Interpret the y-intercept. Choose the correct answer below. The y-intercept is the number of banks in 2012 The y-intercept is the number of banks in 1986 The y-intercept is the minimum number of banks allowed in the country The y-intercept is the number of banks in 1991 The y-intercept is the maximum number of banks allowed in the country

In 2010, the number of clown costumes sold at a single costume shop was 15.  By 2015, that number had grown to 30.  Assuming a constant increase in clown costume sales, calculate the unit rate of change (slope) from 2010 to 2015.  Round your answer to the nearest tenth.  Do not include units with your answer.

From 1985 to 2003, the number BB of federally insured banks could be approximated by B(t)=−323.4t+13794B(t)=-323.4t+13794 where t is the year and t=0 corresponds to 1985.How many federally insured banks were there in 1990?   Find the slope of the graph of B. Interpret this slope as a rate of change. Choose the correct answer below. The number of banks decreased by 323.4 banks per year The number of banks increased by 12177 banks per year The number of banks increased by 323.4 banks per year The number of banks decreased by 12177 banks per year The number of banks decreased by 13794 banks per year The number of banks increased by 13794 banks per year Find the y-intercept of the graph of B.The y-intercept is Interpret the y-intercept. Choose the correct answer below. The y-intercept is the number of banks in 1985 The y-intercept is the number of banks in 2003 The y-intercept is the number of banks in 1990 The y-intercept is the minimum number of banks allowed in the country The…

A car initially sold for $23,999. Its class life is 12 years, and the car depreciates by $750 each year. Express this as a linear function. Find the salvage value. Then, find the value after six years.