exam Maths Puzzle Numerical Ability

the difference of two numbers is 7. The second is 4 less than 2 times the first.What are the two numbers?

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exam Other Question

If an object is thrown upward with an initial veliocity of 64 ft/sec, its height after t sec is given by h = 64t - 16t^2. Find the numbrt of seconds the object is in the air begore it hits the ground. Write the equation of the line with slope -1/2 and y-intercept (0, 3).