exam Maths Puzzle Numerical Ability

Find the value of k so that the line (2+k)x + (2-k)y=15 has slope 3/2

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exam Other Question

The sum of the digits in the decimal representation of 22^22 is A. The sum of the digits in A is B. What is the sum of the digits in B? can I use this as a straight line graph

Straight-line graphs help me, at work, project weekly goals that correspond with a yearly target. We track various things such as product