40 points linda made a frequency distribution, setting up groups for the data shown. her first group was for 5-9. what was the frequency of her third group? 17,35, 21, 14, 15, 26, 29, 8, 27, 9, 18, 19, 16, 31, 14, 10. that's all it says sorry i cant get more

The first group is 5 - 9 ( 9-5 = 4, so each group is in groups of 4)

The second group would be 10 - 14

The third group would be 15 - 19.

Now find the number of data within the interval 15 - 19.

The numbers above between 15 and 19 are: , 17, 15, 18, 19 and 16  (5 total numbers)

The frequency of the third group is 5.

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!