Materials A and B decay over time. The function for the amount of material A is A(t) = 1000(0.5)2t and for the amount of material B is B(t) = 1000(0.25), where t represents time in days. On which day will the amounts of material be equal? intial day only
day 5 only
day 2 only
every day

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.

List the sides of δrst in in ascending order (shortest to longest) if: m∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12°

Find the zeros of each function. f(x) = 6x^2 - 7x - 20