18/4 = x/30
18x30 /4 = 135 minutes or 2 hours and 15 minutes.
Answer:
D
Step-by-step explanation:
first of all, what is mode: it is the highest occuring number in a set of numbers.
now since 12 is supposed to be the mean and it occurs twice but 9 also occurs twice so for 12 to be the mode, we must add one more 12.
therefore the answer is 12
Answer:
B) 9
Step-by-step explanation:

x = 9