Estimate linear fx

Which of the following is the best estimate for the temperature at 11 pm if the temperature continues to drop at the same rate?
timetemperature °C
3 PM 32

Correct answer:

t =  21.6667 °C

Step-by-step explanation:

t(x)=a x+b  30=6 a+b 20=12 a+b  6a+b=30 12a+b=20  Pivot:Row1Row2 12a+b=20 6a+b=30  Row2126 Row1Row2 12a+b=20 0.5b=20  b=0.520=40 a=1220b=122040=1.66666667  a=351.666667 b=40  t=a 11+b=(1.6667) 11+40=21.6667°C

Did you find an error or inaccuracy? Feel free to write us. Thank you!

Tips for related online calculators
Do you have a linear equation or system of equations and looking for its solution? Or do you have a quadratic equation?
Do you want to convert time units like minutes to seconds?

You need to know the following knowledge to solve this word math problem:

Related math problems and questions: