### Home > INT3 > Chapter 10 > Lesson 10.1.4 > Problem10-54

10-54.
1. Write each series in sigma notation and calculate the sum or an expression for the sum. Homework Help ✎

1. 47 + 34 + 21 + …+ (–83)

2. 3 + 10 + 17 + … + (7n – 4)

What is the expression for the sequence?

How many terms are there in the series?

$\sum_{k = 1}^{11}(60-13k)=-198$