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Worksheet: Representing Data with Matrices

Q1:

The table below represents the prices of some drinks in a café. The café owner changes the prices of the drinks, so that each drink is now two times its original price. Determine the matrix that represents the new prices of the drinks.

Drink Small Size Big Size
Strawberry Juice 1.5 5.5
Orange Juice 2 8.5
Mango Juice 3.5 9
  • A
  • B
  • C
  • D

Q2:

A company produces televisions with 32-inch, 42-inch, and 48-inch screens. The first table gives the number of televisions of each screen size produced in factories and during January 2016. The second table gives the same information for February 2016. Express the total number of televisions of each screen size produced in the two months by factories and in a matrix.

Screens produced during January 2016:

Factory 32 inches 42 inches 48 inches
A 820 770 500
B 690 660 620

Screens produced during February 2016:

Factory 32 inches 42 inches 48 inches
A 560 550 830
B 520 700 660
  • A
  • B
  • C
  • D