Question 3 (4 marks) A sports store has three types of weights machines priced at $550, $750 and $990 and three types of
bench presses priced at $160, $220 and $350. The owner of the store wishes to mark down the prices of
the weights machines by 10% and mark up the prices of the bench presses by 10%.
a.
1mark
Show the prices of the weights machines and bench presses as a suitable matrix
1
b.
Show the scalar matrix that would mark down the weights machines by 10% and mark up the
bench presses by 10%.
1 mark
Mi