Help me please with this

Find the slope of the line that contains the following points. r(-2, 4), s(6, -2)

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

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).