exam Maths Puzzle Numerical Ability

A square piece of cardboard is formed into a box by cutting out 2-inch squares from each of the corners and folding up the sides. If the volume of the box needs to be 84.5 cubic inches, what size square piece of cardboard is needed?

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exam Other Question
On a drawing with a scale of 1/8 in, 1 ft, a window is 3/4 in. wide. What is the actual width of the window? How would you get the answer? Please help.

Find the slope and y-intercept of the line represented by the following equations.

2x - 3y = 6

THANKS
JMS