# Question: suppose that a consumer price index cpi which measures the...

###### Question details

Suppose that a consumer price index (CPI), which measures the cost
of a typical package of consumer goods, stood at 110.5 in 1990 and
150.5 in 2000. Let x=0 correspond to 1990. Assuming that the data
can be modeled by a linear equation, (a) find a linear equation
that best models the CPI. (b) the approximate CPI in 1998. (c) the
approximate CPI in 2001.