In 1997 there were 31 laptop computers at grove high school. starting in 1998 the school bought 20 more laptop computers at the end of each year. the equation = 20 + 31 can be used to determine , the total number of laptop computers at the school years after 1997. what was the total number of laptop computers at grove high school at the end of 2005? a. 160 b. 171 c. 191 d. 268