Can someone please help me on this question?

What is the first quartile of this data set? 10, 11, 12, 15, 17, 19, 22, 24, 29, 33, 38 a. 12 b. 19 c. 29 d. 10

Find the least common denominator for thesetvo rational expressions.n^2/n^2+4n+4 -3/n^2+7n+10

Lana's family entered a 5-kilometer race lana's average step length is about 0.5 meter how many steps will she need to take the finish