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Maths Puzzle
Numerical Ability
Hi will you please explain to me how to determine whether each relation is linear. Here is one problem:
y=-4
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2. Multiply and simplify: x^2-x-20 * x^2+7x+10
___________ ___________
x^2-3x-105 x^2+4x-5
change 35 miles/ hour to feet per minute.