Simplified, (-3x2 + 2x - 4) - (-2x2 - x + 4) is:

What is the percentile for data value 6 in the following data set? 4 13 8 6 4 4 13 6 4 13 2 13 15 5 9 4 12 8 6 13 40 25 35 62

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

Which type of graph would allow us to quickly see how many students between 100 and 200 students were treated?