Answer:
18.0
Step-by-step explanation:
The three lines form a right triangle where 10 and 15 are the two legs of the triangle. You can use the pythagorean theorem to solve for the length of x.
x = 
x = 18.028 (approximately 18)
The value of B is 38. What exactly is this question asking for if the answer is given?
ANSWER:
Point in original figure (2, -3)
Point in final figure (-3, -2)
STEP-BY-STEP EXPLANATION:
The first thing is to determine the original point of the figure on the graph, which would be:

The rule for 270° counterclockwise rotation is as follows:

We apply it in this case, and the new point would be:

We represent the result on the graph, as follows