exam Maths Puzzle Numerical Ability

Solve the following equation for y, showing all work.

Ln (y) � Ln (y-4) = Ln (2)

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exam Other Question

Find the domain of f(x)= 7+ sqrt 3x+21, and express it using interval notation.

Several values of the two functions f and g are given in the following tables:

x 4 5 6 7 2/5x-6=12