An IT shop sells laptops, tablets and mobile phones. The composite bar chart shows information on sales over the last three years.
800
a) How many laptops were sold in 2017?
700
(1)
600
b) Work out the total number of mobile
500
phones sold in the 3 years.
Number sold
400
+
(3)
300
c) Which of the items had the greatest
increase in sales over the 3 years?
Give a reason for your answer.
200
100
+
0
2017
2018
2019
(2)
Total marks: 6
Key:
Laptops
Tablets
Mobile phones

Given f(t) = 282 - 53 +1, determine the function value f(2). do not include f(z) = in your answer

Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.

Drag each expression to the correct location on the solution. not all expressions will be used. consider the polynomial 8x + 2x2 - 20x - 5. factor by grouping to write the polynomial in factored form.