A hiker in africa discovers a skull that contains 72% of its original amount of c-14

Naomi’s parents want to have 50,000, saved for her college education, if they invest 20000 today and earn 7% interest compound annually, about how long will it take them to save 50 thousand

According to the data set, where should the upper quartile line of the box plot be placed?

Bring the fraction a/a-4 to a denominator of 16-a^2