Answer:
, 
Step-by-step explanation:
The velocity function of the projectile is obtained by deriving the position function:

Now, the velocities after 3 and 15 seconds are, respectively:




Answer:
y=-x
Step-by-step explanation:
It's going left one by one, meaning the slope is negative and has a slope of -1 or -x.
Answer:
A
Step-by-step explanation:
16 × 2 = 32
20 × 2 = 40
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Answer:
213.75
Step-by-step explanation:
95×9=855
855÷4=213.75
Answer:
Step-by-step explanation:
let workers=n
time=t(weeks)
t=k/n ,where k is constant .
when t=8,n=3
8=k/3
k=24
t=24/n
n 2 4 6 12
t 12 6 4 2