Assume the statement is true for n=k. Prove that it must be true for n=k+1 , therefore proving it true for all natural numbers, n. Hint: Since the total number of dots increases by n each time, prove that d(k) + (k+1) = d(k+1).

Is the power produced directly proportional to the wind speed, give reasons for your answer?

The party planning committee has to determine the number of tables needed for an upcoming event. if a square table can fit 8 people and a round table can fit 6 people, the equation 150 = 8x + 6y represents the number of each type of table needed for 150 people.

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