Write each series in sigma notation and calculate the sum or an expression for the sum. Homework Help ✎
47 + 34 + 21 + …+ (–83)
3 + 10 + 17 + … + (7n – 4)
What is the expression for the sequence?
How many terms are there in the series?
One possible answer:
Instead of going up to a specific term, this series sums up the first n terms of the sequence given in parentheses.