2. Which expression is equivalent to (9n - 7) - (6n + 5)? A. 3n - 2
B. 3n - 12
C. 13n - 2
D. 13n - 10

Jessa bought a yoyo from a company that claims that, with each retraction, the string rolls up by 60% of the original length. she sets up a tape measure and throws the yoyo 3 times. her data are charted below. throw length of string (feet) 1 3 2 1.8 3 1.08 jessa wants to find the sum of the length of string after 10 throws. what is the sum of the lengths, rounded to the nearest hundredth?