Answer:
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22.05 mi.²
Step-by-step explanation:
A = bh
A = (4.5 mi)(4.9 mi)
A = 22.05 mi.²
x=3
3+x=2x
Subtract x from each side to get the variable on one side
3+x-x=2x-x
3 = x
B. 606,900
Hope it helps