Regression Analysis and Quarterly Compound Interest
1) For a five year period, Ken deposited $800 each quarter
into an account paying 26% annual interest compounded quarterly (Round your
answers to the nearest cent)
(a) How much money was in the account at the end of 5 years?
(b) How much interest was earned during the 5 year period?
Ken then made no more deposits or withdrawals, and the money
in the account continued to earn 26% annual interest compounded quarterly, for
3 more years
(c) How much money was in the account after the 3 year period?
(d) How much interest was earned during the 3 year period?
2) The average temperature in Metropolis in 1970 was 515
degrees In 2010, the average
temperature in Metropolis was 567 degrees Let y be the
average temperature in Metropolis in year x, where x = 0 represents the year
(a) Which of the following linear equations could be used to
predict the average Metropolis temperature y in a given year x, where x = 0
represents the year 1970?
A y = 52x + 515
B y = 52x ? 10,1925
C y = 013x + 515
D y = 013x ? 2046
(b) Use the equation from part (a) to predict the average
temperature in Metropolis in the year 2040
(c) Fill in the blanks to interpret the slope of the
equation: The rate of change of temperature with respect to time is
______________________ per ________________ (Include units of measurement)