---

Status: Waiting for your answers.

Problem:   A baseball card will appreciate in value at a 4.2% annual rate. Currently, it is worth $4.75. When will its value be $10?   Calculate the time (to the nearest tenth in years) by using this formula. A = a(1 + r)t   Solution:   = ( 1 + )t   = ( )t   = ( )t   log   =   t       ≈   t