In mrs. robinson's class, there are 16 girls and 14 boys. the mean of the girls' heights is 63.7 inches, and the mean of the boys' heights is 65.4 inches. what is the mean of the heights of all 30 students? express your answer as a decimal to the near tenth.

Rachel reads 1/5 of the pages of a book plus 12 pages on the first day. on the second day, she reads 1/4 of the remaining pages plus 15 pages. on the third day, she reads 1/3 of the remaining pages plus 18 pages. on the fourth day, she reads the remaining 70 pages. how many total pages are in the book?

The step function g(x) is defined as shown.what is the range of g(x)? ***answer choices in picture.

Give all possible names for the line shown.calculation tip: lines can be written with either point first.