A classroom's population went from 25 to 46 in 15 years. What was the percent of change?

Which of the binomials below is a factor of this trinominal? x^2-13+30

Given the points a(-2, 1) and b(8, 6), find the coordinates of the point c on directed line segment ab, that partitions ab in the ration 2: 3.

In need of in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.