Write the place and value of 9 in 384.809

The water has been on the stove y=9.5x+62.1 after how many minutes will the tempature be 138.1 f

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?

Find the area of the triangle formed by the origin and the points of intersection of parabolas y=−3x^2+20 and y=x^2−16.