exam Maths Puzzle Numerical Ability

Graph the following:
y = -x - 2

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exam Other Question

simplify
3x(5/2)(2x-1)^(3/2) - (2x-1)^(5/2) (3) <----------3 is not part of the power
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(3x)^2

all of that is over 3x^2
tha page 43 Chap.7.3
You have $160 and save $7 per week. Your friend has $210 and saves $5 per week. After how many weeks will each of you have saved the same amount of money?