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The table represents a linear function. what is the slope of the function? –6 –4 4 6

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

Evaluate cos2θ for cosθ = square root of 3/2