Fill in each blank so that the resulting statement is true. E a; =. i= 1 In this summation notation, i is called the of summation, n is the of summation, and 1 is the of summation. Choose the correct terms below.

Select the mathematical expression that is equivalent to the sum Σ; 6 20+1 a. Σ= 2* b. · Σ = 2*+1 C. Σ= 2* d. \ -2 2k+1 Lk=1 O a. A Β.Β. OCC O d. D

Use summation notation to write the sum. Σ D=1 0.4+1.6 + 6.4+ + 409.6 X

Only answer b.)

Use the summation formulas to evaluate summations or to find a number specific expression to evaluate the given summations.