In Madras, temperature at noon varies according to -t^2/2 + 8t + 3, where t is elapsed time. Find how much temperature more or less in 4pm to 9pm.

• Put t=4 we get 27
  Put t=9 we get 34.5
  So 34.5-27=7.5
• 8 years agoHelpfull: Yes(13) No(0)
• putting t=4,
  temperature=-16/2+32+3=27
  t=9,temp=-81/2+72+3=34.5
  change wiil be= 34.5-27=7.5
  
• 8 years agoHelpfull: Yes(3) No(0)
• when t=4pm temp=27
  when t=9pm temp=34.5
  diff between this will be 7.5
  
• 8 years agoHelpfull: Yes(1) No(0)