Can u guys pls help me on this question and pls explain how u got the answer

The chart below shows the distribution of weeds in yard

The number of 8th graders who responded to a poll of 6th grade and 8 th graders was one fourtg of the number of 6th graders whi responded if a total of 100 students responddd to the poll how many of the students responded were 6 th graders

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 4x^2 - 19x- 5