Which expression shows that 11 + 7 = 5 + 13? A. (5+6) + 7 = 5+ (6 + 7)
B. 6 + 6 + 6 = 18
C. 5 + 9 + 4 = 6 + 7 + 5
D. (11 + 4) + 3 = (5 + 7) + 6

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

Under normal conditions, 1.5 feet of snow will melt into 2 inches of water. during a winter season high in the mountains, 301 feet of snow fell. how many inches of water will there be when the snow melts?

4+(2+x) can you me solve this problem