Function machines
Jade has a function machine. Number in
Number out
5
15
6
18
7
21
8
24
The rule for the machine is ‘multiply by 3’.
(a) If 20 is put into the machine, what number is generated on the right-hand side?
20
60
204
9781380050717__text.indb 204
28/04/2022 12:13
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