Suppose that the consumer price index(CPI), which measures the cost of a typical package of consumergoods, stood at 137.4 in 1990 and 177.4 in 2000. Let x=0 correspond to1990, and estimate the CPI in 1998 and 2001. (Assume that the data can be modeled by a straightline.)

Which linear equation best models theCPI?

A. y=4x+137.4

B. y= 4x137.4

C. y= 4x+137.4

In 1998, the CPI would be approximately ____

(Type an integer or adecimal.)

In 2001, the CPI would be approximately ____

(Type an integer or adecimal.)