X = 3
6x + 4 = 22
6x = 18 (subtract 4 from both sides)
x = 3 (divide 6 from both sides)
Model : Actual
48 inches : 604 feet
48 inches : 7248 inches
(÷48) : (÷48)
1 inch : 151 inches
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Answer : Ratio of Model to actual Space Needle = 1 : 151
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Answer:

Step-by-step explanation:

divide both side by 8


So,
All we have to do is multiply 845 million by 51.5%, or 0.515.
845 million * 0.515 = 435.175 million users
435.175 million, or 435,175,000 users accessed Facebook using mobile devices.