Can anyone help with this problem? The path of a placekicked football can be modeled by the function
y = -0.025x (x - 50), where x is the horizontal distance (in yards) and y is the corresponding height (in yards).
I need to know how far the football is kicked, and the football’s maximum height.

The line y = x + passes through (−3, 7) and is parallel to y = 4x − 1.

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

The product of sin 30 degrees and sin 60 degrees is same as the product of