Simplify the following expression.

(9x - 11y) + (35x + 39y)
A.
44x + 28y
B.
44x + 50y
C.
-2x + 28y
D.
-2x + 50y

The length of each stair is 11 inches. what is the rise, r, for each stair? round to the nearest inch. 2 inches 7 inches 17 inches 24 inches

Afurniture manufacturer produces chairs and sofas. each chair requires 10 yards of fabric, and each sofa requires 20 yards of fabric. the manufacturer has 300 yards of fabric available. to fulfill orders, the number of sofas must be at least twice the number of chairs. let x be the number of chairs and y the number of sofas. which inequalities are described in the problem? check all of the boxes that apply

The graph below represents the number of dolphins in a dolphin sanctuary. select all the key features of this function.