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[2] 
TMI, Inc., makes blank CDs. TMI's fixed costs are $12,100. Each CD costs $0.60
to make, and sells for $1.15. Enter numbers in decimal form below expressing
TMI's cost C (2 pts), revenue R (1 pt), and profit P (2 pts) when it makes
x CDs. [ Thus, if you (wrongly) thought C = ( ½ )x , you would enter 0.5 in the top left box and 0 in the top right box ] Scoring : C and P worth 2 points each ; R worth 1 point 
C = x + ;  
R = x + ;  
P = x + . 
[3] 


[4]  Bart is about to receive money in a trust started by a royal relative 21 years ago (at Bart's birth). If $2100 was originally placed in this trust, how much will Bart receive today, if the trust has earned 8% per year compounded quarterly? (See instructions above) 

[5]  The Taylors have a 30year home mortgage to secure a home loan of $100 000. If annual interest rates are 6% compounded monthly, what is the Taylors' monthly mortgage payment? 

[6]  For the past 12 years, Julie's employer has contributed $1OO at the end of each month into a retirement account paying interest at an annual rate of 6% compounded monthly. How much is in Julie's account now? 

[7] 
(a)(2 pts) Write as a single matrix : [Original matrices had a 3rd row ] 

(b)(3 pts) Find this matrix product : 










(b)(2 pts) Write the system of equations at the right as a single matrix equation: A^{.}X = B 


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