PLEASE HELP!! Choose the equation of the line that is parallel to the y-axis. A) x=-2 B) x+y=0 C) x=y or D) y=2 one choice answer

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

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20

What would be the reasons for lines 3 and 4? a. addition property; subtraction property b. addition property; solve c. substitution property; subtraction property d. substitution property; prove