1. Rashida is analyzing her students' test scores. For which data set would the median be the best measure of center?

a. 93, 95, 88, 38, 79, 85, 88, 90

b. 80, 83, 87, 84, 79, 81, 80, 77

c. 99, 95, 93, 90, 88, 92, 87, 91

d. 67, 72, 75, 74, 68, 69, 70, 65

2. To prepare for a lab experiment, Brad is making a solution that uses two types of concentrations: 75 mL of 50% salt and 125 mL of 10% salt. What is the salt concentration of the mixed solution?

a. 35%

b. 16%

c. 25%

d. 83%