we can use height formula

where
h(t) is the height after t seconds
v is velocity
h(0) is initial height
g is acceleration due to gravity
we know that
g=32 ft/s^2
we have
v=18.5ft/s
h(0)=4.5ft
so, we can plug these values
and we get


now, we have to find time when object will hit the ground
and we know that object will hit the ground when height becomes 0
so, we can set h(t)=0
and then we can solve for t

we can use pythagoras theorem

..............Answer
Answer:
I would be 7 gallons used and 5 gallons left
Step-by-step explanation:
multyply 1.75 times 4 hours equal 7 then 12-7=5 is the total of gallons left
Hope this helps

Divide both sides by
to get


Substitute
, so that
. Then



The remaining ODE is separable. Separating the variables gives

Integrate both sides. On the left, split up the integrand into partial fractions.




Then

On the right, we have

Solving for
explicitly is unlikely to succeed, so we leave the solution in implicit form,

and finally solve in terms of
by replacing
:



This is your answer <span>33 x 33 = 4^3 = 64</span>