#7**+1 **

"OK, so like the question that i need is "The altitude "a" (in feet) of a plane "t" minutes after liftoff is given by a=3400t+600. How many minutes afterliftoff is the plane at an altitude of 21,000 feet?" Sorry, i didn't put it right earlier."

Maybe you should have put that in the question.

We want to know the number of minutes and we have the value of a, 21,000. Plug in values:

21,000 = 3,400t + 600

20,400 = 3,400t

t = 6

So, it would take \(\boxed{6}\) minutes to achieve an altitude of 21,000 feet.

TwentyFour Jan 15, 2019

#1**0 **

Um, I guess a is the total, and 3400t is the amount per time, and we have a starting base at 600...

itsyaboi Jan 15, 2019

#3**+1 **

You really can't solve ONE equation with TWO variables without more information.....like another equation relating the two variables...OR a value for one of the variables (a or t)

As written there are infinite answers,,,,,

ElectricPavlov Jan 15, 2019

#4**-1 **

I'm sorry, but math isn't really my "thing" so i have no idea what you mean. May you please say it a little more to where a teenage girl can understand please?

Guest Jan 15, 2019

#5**0 **

Sorry..... You have ONE equation a = 3400t + 600

and TWO variables a and t

you cannot solve this equation unless you are given a or t OR you have another equation which involves a and t

say a= 12 t or something like that.....

ElectricPavlov
Jan 15, 2019

#6**0 **

OK, so like the question that i need is "The altitude "a" (in feet) of a plane "t" minutes after liftoff is given by a=3400t+600. How many minutes afterliftoff is the plane at an altitude of 21,000 feet?" Sorry, i didn't put it right earlier.

Guest Jan 15, 2019

#9**+1 **

Heck yah! There ya go.... we needed the 'a' 21000 ft TwentyFour posted the solution......

ElectricPavlov
Jan 15, 2019

#7**+1 **

Best Answer

"OK, so like the question that i need is "The altitude "a" (in feet) of a plane "t" minutes after liftoff is given by a=3400t+600. How many minutes afterliftoff is the plane at an altitude of 21,000 feet?" Sorry, i didn't put it right earlier."

Maybe you should have put that in the question.

We want to know the number of minutes and we have the value of a, 21,000. Plug in values:

21,000 = 3,400t + 600

20,400 = 3,400t

t = 6

So, it would take \(\boxed{6}\) minutes to achieve an altitude of 21,000 feet.

TwentyFour Jan 15, 2019