Which is equivalent to the expression? Please don’t comment if you don’t know the answer.

2(n-1)+4n=2(3n-1)n=0no solutioninfinitely many solutions n= - 4 !

Aman steps out of a plane at a height of 4,000m above the ground falls 2,000m very quickly and then opens his parachute and slowly falls the remaining 2000m to the ground what height above the ground would be the best choice for a reference point

Apatient is given 50 mg dose of medicine the medicines effectiveness decreases every hour at a constant rate of 40% what is the exponential decay function that models this scenario how much medicine will be left in the patients system after 2 hours