exam Maths Puzzle Numerical Ability

can someone please help me?

1. Do exponential functions only model phenomena that grow, or can they also model phenomena that decay? Explain what is different in the form of th

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exam Other Question

an alloy of metals is 20% copper. another alloy is 50% copper.how much of each should be used to make 1000 gram of an alloy that is 45% copper? 5x+3
If f(x)=----, then f(c+2)=
x+5

NOTE 5x+3 is divied by x+5