A. (For Claire’s gross income) is 3,725.
B. (For Tina’s net income) is 2,100.
D. (For Jie’s net income) is 48.6, or 243/5.
is the same as 
Dividing by 3 is the same as multiplying by the fraction 1/3
Yes. The two theorems are equivalent statements given that the fundamental theorem of calculus is true.
The answer for your questions is -5
Adjaadjacent angles are angles that are the vertex but vertical angles are lines that cross each other.