x=-11
Hope this helps :T
Answer: d
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Step-by-step explanation:
Answer:
2
15
10
3/8 x £40 = £15 for Sarah
3/8 x £40 = £15 for Fiona
2/8 x£40 = £10 for david
the first formula
the graph is y=cosx and cosx=sin(x+90)
