Sharif opened a bank account that initially had $0 in it. he then deposited $150. later that week, he withdrew $35. write each value as an integer and model each integer on a number line.

Draw a number line. Label 0 on it because he started out there. Then, label 150 for the $150 he deposited. After that subtract 35, written as -35, and label 115 on the number line (150 - 35 = 115). 

Here's how you will write all integers:
0
150
-35

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Yes i also think it is b

72 is the mode because it shows up the most number of times