A pound of chocolate costs 6 dollars. Rita buys p pounds. Write an equation to represent the total cost c that Rita pays.

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Asmall book publisher knows that 26 books weigh 41 lbs. how much do 40 books weigh?

Use mathematical induction to prove the statement is true for all positive integers n, or show why it is false. 1^2 + 4^2 + 7^2 + + (3n - 2)^2 = [n(6n^2-3n-1)/2]