exam Maths Puzzle Numerical Ability

2x
-- = 40
5

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exam Other Question

if f(x)=5x-1 find the following:
f(a-2)

thanks for your help

Heather Here is my question I made a chart to show the population growth from 2010 thru 2016 with a growth of 300 per year I need to find a linear equation using the form P=mt+b(y=mt+b) w