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12ms Hw ReMix 15
Contributed by: Johnson
INSTRUCTIONSUnless otherwise stated in the question all answers should:
- be written WITHOUT spaces e.g. P=2l+2w- sets should be written with the SMALLEST number first e.g. {-3,-1,5,7}- be written with NUMBERS FIRST, followed by letters in ALPHABETICAL ordere.g. -2bcm, -3x2
- use ^ for powers e.g. xΛ2 squared is x2
- be written in descending powers e.g. -3x3+x2-3x+1- use <= for less than or equals; >= for greater than or equals- use sqrt for square root- use cubert for cube root
The rate of inflation from the beginning of 1995 has been 4.5% per year.
(a)   A loaf of bread cost $1.70 on January 1, 1996.
        What did it cost on January 1, 1999?
(b)   A car cost $40 000 on January 1, 1999. What did it cost on January 1, 1997?
        (Give your answer to the nearest thousand dollars.)
dollars
dollars
The table below shows the deposits, in Australian dollars (AUD), made by Vicki
in an investment account on the first day of each month for the first four months
in 1999. The interest rate is 0.75% per month compounded monthly. The interest
is added to the account at the end of each month.
(a)   Calculate the amount of money in Vicki’s account
        at the end of February.
(b)   Calculate the amount of Australian dollars in Vicki’s  
        account at the end of April.
Vicki makes no withdrawals or deposits after 1st April 1999.
(c)   How much money is in Vicki’s account at the end of
        December 1999?
From 1st January 2000 the bank applies a new interest rate of 3.5%
per annum
compounded annually.
(d)   In how many full years after December 1999 will Vicki’s
        investment first exceed 3300 AUD?
AUD
AUD
AUD
The numbers of games played in each set of a tennis tournament were

              9, 7, 8, 11, 9, 6, 10, 8, 12, 6, 8, 13, 7, 9, 10, 9, 10, 11, 12, 8, 7, 13, 10, 7, 7.
The raw data has been organized in the frequency table below.
(b)   Calculate the mean number of games played per set.
(d)   What is the modal number of games?
(a)   Write down the value of n.
(c)   What percentage of the sets had more than 10 games?
%
The table below shows the number and weight (w) of fish delivered to a local fish
market one morning.
Write down the value of c?
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