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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

What is the solution of log2  (3x  -  7)  =  3? 4 5

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)