A cell-phone tower that has a transmission range of 50 miles is located 40 miles due South of a straight road. Find x, the length of the section of the road that is in the transmission range of the tower.

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Ahiking trail is 6 miles long. it has 4 exercise stations, spaced evenly along the trail. what is the distance between each exercise station?

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).