Find an explicit rule for the nth term of the sequence. -5, -25, -125, -625, answer choices a) an = -5 • 5n b) an = 5 • -5n + 1 c) an = 5 • -5n d) an = -5 • 5n - 1

Asystem of equation is shown below 6x - 2y equals 3 . and 5x + 3y equals 4. would you solve by substitution or elimination? and why

If you answer right ill give brainliest, : )

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days