exam Maths Puzzle Numerical Ability

Can someone help solve these so I can make my graph. I am missing something.

x + 2y < 4
x - y < 5

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exam Other Question

Factor each of the following trinomials completely
2a^3-52a^2b+96ab^2
If i want to have 85,000 in 10 years.
How do I figure out how much i need to start with if i have a 5% annual interest rate, compounded monthly.
How do i work this out.
I u