Math i willl be marking brainliest

2x - 20 = 32 20 - 3x = 8 6x - 8 = 16 -13 - 3x = -10

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

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.