This is a working backwards problem. You know he has $35 at the end. Before he gave his brother $5, he would have $40, which is half of what he had before he bought the clothes, so he would have had $80. Before he spent the $40 on shoes, he would have had $120, so the answer is $120.
Answer:

Step-by-step explanation:

Answer:
C
Step-by-step explanation:
A and B have initial value of 100 and D is a quadratic equation
Answer:
11. This is counting only odd numbers, or counting by two starting with one.