Respuesta :

maliapittsenberger

Answer:

15

Step-by-step explanation:

90 - 30 = 60

60 - 45 = 15

d.15

madisonbeltz27

Answer: D)15

Step-by-step explanation: Look at the totals first, 90 is the full total so subtract 30 from 90 and you get 60. Now look at the fail column, the only number is 45 so subtract 45 from 60 and you get 15.