A child is 20 inches long at birth. if we consider that the baby will grow at a rate proportional to its body size until adulthood, then the percentage of her adult height attained can be modeled by the logarithmic function
f(x) = 20 + 47log ⁡ ( x + 2 ) ,
where x x represents her age in years and f(x) represents the percentage of her adult height reached at age x . what percent of the child’s adult height is attained by age 11? round your answer to the nearest whole percentage, if necessary.