Red aerial mini-flares are used by some boaters in an emergency. The flight of one brand of flares, when fired the function is modeled by the function h(t) = -16t2 + 84t + 3. How many seconds does
it take for the flare to reach it's maximum height? What is the height reached by the flare after 4
seconds?
Maximum Height:
Height Reached after 4 seconds:

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.

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

If f(x) = 4x – 3 and g(x) = 8x + 2, find each function value a.f[g(3)] b.g[f(5)] c.g{f[g(-4)]}