In 1990, the percent of people over 25 years old who had a bachelor's degree or higher was 20.8%. By 2000, the percent of people over 25 with a bachelor's degree or higher was 25.6%. Assume the rate of increase is constant.

a) Write an equation that relates the percent P of people over 25 with a bachelor's degree or higher at any time t, where t is the year.
b) If the trend continues, estimate the percentage of people over 25 who will have a bachelor's degree or higher by 2004.
@amistre64 @cruffo @timo86m

Question

In 1990, the percent of people over 25 years old who had a bachelor's degree or higher was 20.8%. By 2000, the percent of people over 25 with a bachelor's degree or higher was 25.6%. Assume the rate of increase is constant. 

a)	Write an equation that relates the percent P of people over 25 with a bachelor's degree or higher at any time t, where t is the year. 
b)	If the trend continues, estimate the percentage of people over 25 who will have a bachelor's degree or higher by 2004. 
@amistre64  @cruffo @timo86m

cruffo · Answer

attachment

anonymous · Answer

@cruffo so i need not convert the percentages to get for instance 0.208 and 0.256

anonymous · Answer

oh i got it now.

anonymous · Answer

i would eventually get the same either ways

cruffo · Answer

yes, that is Correct. The way the problem is Stated made me think that the percentage would be ok, vs. Changing to a decimal.  Although, most problems of this type will scale the year values like i did, some will use the actual year values.
  That is, they would use t = 1990  instead of t = 0.