Jenna and luis are building a patio around a flower bed, as shown. Jenna says that the perimeter of the patio is modeled by the expression 12 + 6x. Luis says that the perimeter of the patio is modeled by the expression 18 + 8x. Whose expression for the perimeter is incorrect

Usan threw a softball 42 yards on her first try and 5112 yards on her second try. how much farther did she throw the softball on her second try than her first? express your answer in feet and inches. 9 ft 12 in. 28 ft 12 in. 28 ft 6 in.

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?

Factor these polynomials and explain how 1. 12x - 3x^2 2. 20 - 240x^2