A curtain manufacturer uses a 90-yard roll of material to make 7 identical curtains. There was 7.75 yards of material left over. How many yards were needed for each curtain?

2/3(-6y+9x) expand each expression using the distributive property

Round to the nearest ten thousandth.i dont get this

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?