Answer:
x=6
Step-by-step explanation:
......................
7x+2y = 48
Let y = 3
7x +2(3) = 48
7x+6 = 48
Subtract 6 from each side
7x+6-6 = 48-6
7x = 42
Divide each side by 7
7x/7 = 42/7
x = 6
the answer is in the attached image below
3.5 or 3 1/2 feet of the shelf
yes
im not 100% sure but i think its the last one
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im not 100% sure though
