It should be 15% I think I’m right
Then using trygonometric table or a graph we read that:
Period of cosinus function = 2π
So the last answer is
They need 18 more teachers.
Set the problem up as a ratio.
3 x
---- = -------
70 14,700
70 x = 44,100
x = 630
The district already has 612 teachers. So, 630 - 612 = 18 more needed.
The answer correct answer is b
Answer:
-60
Step-by-step explanation: