How many customers were younger than 35?
ages of store customers
1 0 2 3 3 6 8
2 1 1 3 4 5 6 6
3 2 2 4 4 4 5 7
1 1 2 3 3 5 8
5 0 0 1 5 6
6 2 4 5 5
71 3
key: 1 | 0 = 10

The longer leg of a 30-60-90 trangle is 18

The students in a class were asked how many siblings they have. the data obtained is represented in the dot plot. the number of students who have no siblings is . the number of students who have three or more siblings is .

The temperature of a chemical solution is originally 21 ? c . a chemist heats the solution at a constant rate, and the temperature of the solution 75 ? c after 1212 12 minutes of heating. the temperature, tt t , of the solution in ? c is a function of x , the heating time in minutes. write the function's formula.