11 students are competing for scholarships based on their GPA. The top 4 students will receive scholarships of $1500, $1000, $500, and $250, respectively. In how many ways can the scholarships be awarded?

One of the inventors of integrated circuits observed that the number of transistors that fit on an integrated circuit will double every 24 months. what type of relationship most appropriately models this situation?

What is the interquartile range of this data set? 2, 5, 9, 11, 18, 30, 42, 48, 55, 73, 81

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex