
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
July 20th, 2015, 09:42 AM  #1 
Newbie Joined: Jun 2015 From: Austin Posts: 12 Thanks: 0  Exponent Word Problem
Forum: I am trying to figure this out Heavier aircraft require runways with thicker pavement for landing and takeoff. A pavement 6 inches thick can accommodate an aircraft weighing 80,000 lbs., whereas a 12inchthick pavement is necessary for a craft weighing 350,000 lbs. The relation between pavement thickness t in inches and gross weight W in thousands of lbs. is modeled by W=Ca^t $\displaystyle W=Ca^t$ So.. (6, 80),(12,350) a. Find values for C and a. On my notes I have $\displaystyle 80=Ca^6 $ => $\displaystyle C=8/a^6 $ But I do not know where the 8 came from. Could anyone explain? 
July 20th, 2015, 10:04 AM  #2  
Math Team Joined: Jan 2015 From: Alabama Posts: 3,264 Thanks: 902  Quote:
 
July 20th, 2015, 11:00 AM  #3 
Newbie Joined: Jun 2015 From: Austin Posts: 12 Thanks: 0 
Well that makes sense then. So to begin solving this problem would I go like this: $\displaystyle f(350)/f(80) = a^6 ; f(350)/f(80) = 350/80 = 35/8 $ Then $\displaystyle W = C(35/^x $ Last edited by TravisR; July 20th, 2015 at 11:03 AM. 

Tags 
exponent, problem, word 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Integer Exponent Problem  Kiphyl  Algebra  3  March 4th, 2014 09:24 AM 
Tricky exponent problem.  FrozenNumber  Algebra  3  November 17th, 2013 05:16 PM 
Problem with e raised to an exponent?  Rocky Revival  Calculus  4  July 5th, 2009 10:37 AM 
exponent math problem  azninvasion01  Algebra  1  March 3rd, 2009 06:12 PM 
How can one solve for exponent n in this problem.  rune2402  Algebra  2  October 21st, 2007 06:07 AM 