Answer: B. x > 3
Step-by-step explanation:
Okay so this is how is goes....
If you have 43$ in your bank account and you deduct 5 dollars a month it would be d=43-5m
Meaning every month(M) it takes 5 dollars away
so if you had 43$ and i took away 5(m)
it would be d=43-5m
Hope this helps
Answer:
TC recheck it hexes ten 8 Uzbek
we are given
![s(t)=-4.9t^2+20t+60](https://tex.z-dn.net/?f=s%28t%29%3D-4.9t%5E2%2B20t%2B60)
(a)
we can plug t=0
![s(0)=-4.9(0)^2+20(0)+60](https://tex.z-dn.net/?f=s%280%29%3D-4.9%280%29%5E2%2B20%280%29%2B60)
![s(0)=60](https://tex.z-dn.net/?f=s%280%29%3D60)
so, the height above the ground when the object is launched is 60 meter......Answer
(b)
we can set s(t)=0
and then we can solve for t
![s(t)=-4.9t^2+20t+60=0](https://tex.z-dn.net/?f=s%28t%29%3D-4.9t%5E2%2B20t%2B60%3D0)
![-4.9t^2+20t+60=0](https://tex.z-dn.net/?f=-4.9t%5E2%2B20t%2B60%3D0)
we can use quadratic formula
![t=\frac{-200-\sqrt{200^2-4\left(-49\right)600}}{2\left(-49\right)}](https://tex.z-dn.net/?f=t%3D%5Cfrac%7B-200-%5Csqrt%7B200%5E2-4%5Cleft%28-49%5Cright%29600%7D%7D%7B2%5Cleft%28-49%5Cright%29%7D)
we get
..........Answer
(c)
we can find vertex
![t=\frac{-20}{2*-4.9}](https://tex.z-dn.net/?f=t%3D%5Cfrac%7B-20%7D%7B2%2A-4.9%7D)
t=2.040816
now, we can plug it back
![s(2.040816)=-4.9(2.040816)^2+20(2.040816)+60](https://tex.z-dn.net/?f=s%282.040816%29%3D-4.9%282.040816%29%5E2%2B20%282.040816%29%2B60)
![s(2.040816)=80.408](https://tex.z-dn.net/?f=s%282.040816%29%3D80.408)
so, the maximum height is 80.408meter.........Answer