exam
Maths Puzzle
Numerical Ability
Solve the system using substitution or elimination:
3x+2y= -12
2x+y= -7
and
2x-4y= -2
4x+8y=0
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exam Other Question
How many years does Steven need to invest his $3,000 at 7% to earn $210 in simple interest?
2x - 3y= 6