Foundation June 2018 Paper 1R Q6

EdexcelCurrent spec5 marksFunctions

6 Here is a number machine.

Number machine: input, then multiply by 4, then subtract 8, then output
(a) Work out the output when the input is 18 (1)
(b) Work out the input when the output is 20 (2)

Here is a different number machine.

Number machine: input, then multiply by 5, then add x, then output

For this number machine, when the input is 8 the output is 50

(c) Work out the value of \(x\). (2)
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