A system of two linear equations has exactly one solution. One equation is 4x + y = 8. Select the equation that would make this system have exactly one solution. A 3x + y = 8
B 4x + y = 6
C 8x +2y = 16
D 12x + 3y = 10​

Situation: . find the substance's half-life, in days. round your answer to the nearest tenth. a 11 gram sample of a substance that's used to treat thyroid disorders has a k. value of 0.1247. enter the correct answer n - noekt done no - initial mass (at time t = 0) n - mass at timet k a positive constant that depends on the substance itself and on the units used to measure time t= time, in days