smc-616-10-Basic Calculations

Matrices, GEN1 2024 VCAA 26 MC

A market stall sells three types of candles.

The cost of each type of candle is shown in matrix below.

Towards the end of the day, the cost of each item is discounted by 15%.

Which one of the following expressions can be used to determine each discounted price?

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Elena imports three brands of olive oil: Carmani () Linelli () and Ohana ().

The number of 1 litre bottles of these oils sold in January 2021 is shown in matrix below.

What is the order of matrix ? (1 mark)

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Elena expected that in February 2021 the sales of all three brands of olive oil would increase by 5%.
She multiplied matrix by a scalar value, , to determine the expected volume of sales for February.
What is the value of the scalar . (1 mark)

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