.?

According to the number line, what is the distance between points a and b? v ++ + + + + -16 -14 -12 -10 -8 + 6 + 4 + -2 + 0 + 2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 o6 units o 7 units 12 units o 14 units

Use the elimination method to solve the systems of equations. choose the correct ordered pair. 7x+4y=39

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?