exam Maths Puzzle Numerical Ability

if a 5 foot 6 person cast a 11 foot shadow and a nearby tree casts a 20 foot shadow how tall is the tree

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exam Other Question

(2x^3-9x^2+11x-3) / 2x-3 im looking for the slope in percent of PH BUFFER SOLUTIONS. The readings are 4.00, 7.02, and 10.07. my question is what is the slope percent? Can you help me?