Answer:
r = ( -14.4 , 6.47 )
Step-by-step explanation:
in the photo you will find all the steps
Your answer is B. 12.
12 kids are unaccounted for after you subtract the kids that take A1, then A2, the both subjects.
Answer: 4 seconds
Step-by-step explanation:
Given: The function
can be used to model the height of the ball where t is the time in seconds after the ball kicked and h(t) is the height in feet.
Differentiate the given function with respect to t , we get

Put h'(t)=0

Also, 
By second derivative test, h(t) is maximum at t=4.
Hence, the time in Devon which the ball reaches it maximum height = 4 seconds
Answer:
10 as when you divide 40 percent of 25 you get 10 so it basically means 10 members attended the meetings on saturday.