Maggie bought a $10 book, a $14 book, and a $4 magazine. The store was having a sale on their books only - all books were marked down 20%. If the sales tax rate is 10%, what will Maggie's total cost be after the discounts and tax?

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?