exam Maths Puzzle Numerical Ability

solve the system of linear equations
What is x?
5x+2y= -7
What is y?
x+3y=9

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exam Other Question

Let f(x) = -x - 5 and g(x) = 2x + 3. Find the indicated value.

g(0)

Help with this equation would be appreciated. I painted a picture that is 4 inches longer than it is wide. If I put a 3 inch frame around my picture, the area increases by 96 square inches. What are the dimensions of my pictur