exam Maths Puzzle Numerical Ability

I need help with this problem:
-3(5x-y)>0

Thank You,
Katy Hunter

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exam Other Question

The depreciation of a recent investment is modeled by the function, y=275(0.95)^x. What is the rate of depreciation, expressed as a percent? Can someone please explain? Please solve the formula pr=i/1+i for i