SOLUTION: A potato gun is a device made out of plastic pipe that launches a potato using compressed air. They can be great fun, and even educational for physics and math, as this question il

Question 1126994: A potato gun is a device made out of plastic pipe that launches a potato using compressed air. They can be great fun, and even educational for physics and math, as this question illustrates. A potato launched by a particular potato gun has a height described by h(t)=-16t^2+120t+3. When is the potato 203 feet in the air?
The potato is 203 feet in the air after [blank] seconds on the way up and after [blank] seconds on the way back down.
** I first attempted to find the vertex and use it as my answer, which would have been (3.75,333).
Found 2 solutions by Boreal, MathLover1:
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
203=-16t^2+120t+3
16t^2-120t+200=0
divide by 8
2t^2-15t+25=0
(2t-5)(t-5)=0
t=2.5 seconds and at 5 seconds

Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

When is the potato feet in the air means
........solve or ; I am going to move all terms from the right to the left

...factor out
....to factor rest, write as
.....group
....actor out from first group and from second group

=> or
The potato is feet in the air after second on the way up and after seconds on the way back down.

RELATED QUESTIONS
I need help with this question... Using a potato launcher, a potato is launched upward (answered by Alan3354)
I am not understanding this problem... Using a potato launcher, a potato is launched... (answered by MathLover1,ikleyn)
For a potato race, a straight line is marked on the ground from a point A, and points B,... (answered by greenestamps)
The weight of potato chips in a medium-sized bag is said to be 10 ounces. The amount that (answered by Theo)
The trajectory of a potato launched from a potato cannon on the ground at an angle of 45... (answered by stanbon)