exam Maths Puzzle Numerical Ability

logarithmic equations
log(x+10)-log(x+4)=log x

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exam Other Question

Solve the following system of linear inequalities by graphing.
x - 2y  4
x  4
The first equation is greater than or equal to 4 and the second is less than or equal to 4. I have tried to figure this one out can you help? #82. Venture capital. Henry invested $12,000 in a new restaurant. When the restaurant was sold 2 years later, he received $27,000.