What is the upper quartile of this set of data?
18, 16, 12, 22, 21, 16, 20, 21, 14, 17, 15
a) 20
b) 21
c) 22
d) 17

Ineed in figuring out this problem.

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.

If you were constructing a triangular frame, and you had wood in the length of 4inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no. explain your mathematical thinking