caludiacarias2016 caludiacarias2016 Today at 9:21 PM Mathematics Answered Owen was 34 1/2 inches tall on his second birthday he grew an average of 2 1 / 2 inches each year for the next 10 years then he grew an average of 1 1 / 2 inches each year for the next 6 years how tall is Owen on his 18th birthday plan