quick M1 quiz

Work out the value of the following expressions when a = 3, b = 4 and c = 5.
a + b   

• 7
• 8
• 9
• 6

Work out the value of the expression when x = 3, y = – 2 and z = – 4.
y + x – z     

• -5
• -3
• 3
• 5

• 10

• 2

• 30

• 4

If y=7,find the value of 2(y+4)

• 11
• 22
• 20

Two pulleys are connected by a belt. If the larger pulley rotates at 120rpm what speed would the smaller turn at?

pulley ratio is 16:4

• 480 rpm

• 30 rpm

• 1920 rpm

• they both have the same gradient

• -23

• -27

• -8

• +9

• +3

• -3