Answer:
See below
Step-by-step explanation:
The function
oscillates between -1 and 1, so the range is
.
Its 3,167 hope this helped
Since the ratio is 3:4, and 12/4 is 3 than you do 3x3 and get 9 so the answer is 9:12 or 9 boys and 12 girls. To check your answer, you can do 3/4 (for 3:4) and that is 0.75. If you do that with 9:12 you also get 0.75.