exam Maths Puzzle Numerical Ability

Hello,

I need help solving this word problem:


The length of a rectangle is 10 more than three times its width. The perimeter of the rectangle is 108. Find the dimensions of the rectangle.


Thank you

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exam Other Question

solve the system by graphing
x+y=3
x+y= -1


My question is do I just pick a number to plug in for x & y or do I use the 3 and 1 somehow?
Find the x-intercepts and y-intercepts for f(x).

f(x) = x^2 - 8x + 9


The x-intercepts are: 1.354 & 6.646
the y-intercepts are: 9

Thank you!