Answer:
x=-2
Step-by-step explanation:
5x+17=7
5x=-10
x=-2
Answer: 0.44
Step-by-step explanation: 5/3)^-2=0.36 (9/11)^-1=1.22222222 The 2 goes on forever so 1.22.
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I can only assume it would be 18 gallons. 140/14= 10 miles per gallon. 180 miles=180/10. Hope this helps