exam Maths Puzzle Numerical Ability

Solve each of the following by graphing
x-y=4
2x-2x=8

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exam Other Question

Translate the following into a quadratic equation, and solve it:

the length of a rectangluar garden is three times its width; if the area of the garden is 75 square meters, what are the dimensions?
An object is projected upward with an initial velocity of 251 feet per second from a height of 32 feet. During what time period will its height exceed 91 feet?