Evaluate the following expressions.
a. Summation from k equals 1 to 18 k
b. Summation from k equals 1 to 7 left parenthesis 4 k plus 1right parenthesis
c. Summation from k equals 1 to 6 k squared
d. Summation from n equals 1 to 8 left parenthesis 1 plus nsquared right parenthesis
e. Summation from m equals 1 to 4 StartFraction 5 m plus 5 Over7 EndFraction
f. Summation from j equals 1 to 3 left parenthesis 3 j minus 7right parenthesis
g. Summation from k equals 1 to 8 k left parenthesis 7 k plus 6right parenthesis
h. Summation from n equals 0 to 4 sine StartFraction n pi Over 2EndFraction
