A printer is printing photos. For every 12 photos, the printer takes 4 minutes. Complete the table below showing the number of photos and the time it takes to print them.
Number of photos
12
21
30
X
Time (minutes)
4
6
9

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?