A data set is made up of these values. 1, 2, 4, 5, 8, 10, 11
Find the interquartile range.

A. 2 - 1 = 1

B. 11 - 1 = 10

C. 10 - 2 = 8

D. 11 - 5 = 6

Identify the graph of y = ln x + 1.

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?