Problem 1.1 A submarine starts at 0 units and has groups of 3
floats and groups of 4 anchors attached.
Select all of the expressions that would make the
submarine's final position positive.
(Select all that apply.)
1-(5)(3)+(2)(-4)
1 (5)(3)-(2)(-4)
-(5)(3)-(2)(-4)
(2)(3)+(5) (-4)
-(2) (3) -(5)(-4)
(2)(3)-(5)(-4)

The length of a rectangle plus its width is 25 cm. the area is 156 square cm. what are the length and width of the rectangle? separate the answers with a comma.

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.

Someone answer this asap for the length, in feet, of a rectangular rug is represented by the expression 5x² + 2x. the width, in feet, is represented by the expression 3x². which expression represents the perimeter, in feet, of the rug? a. 8x² + 2x b. 8x² + 4x c. 16x² + 2x d. 16x² + 4x