Answer:
24 degrees
Explanation:
the way i do it is i add 9 + 15 to get the answer. you can even drawit on a number-line. draw a number-line and count how many times you had to jump on the number-line to get to -15
-15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
count how many numbers there are (the underlined numbers)
or as i said, just add 9 + 15 to get the answer!!!!
hope this helped :)