exam Maths Puzzle Numerical Ability

Use the equation of the exponential function whose graph passes through the points (0,-2) and (2,-50) to find the value of y when x=-2.

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exam Other Question

There are two real values of r for which:

(x^4)-(x^3)-(18x^2)+52x+k

has a factor of the form x-r. One of these values is r=2. What is the other value of r?
----------------- The length of a rectangular piece of sheet steel is 2 in. longer than the width. Find the exact diemnsions if the area of the sheet is 168 sq. in.