What is the equation of a vertical line that goes through the point (-4,2)

y=2

Step-by-step explanation:

Vertical lines go up and down.  That means they have the same y value

The point is (-4,2)  the y value is 2.  The equation of a line with the same y value is y =   Since our point has a y value of 2

y =2

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is:

$450

step-by-step explanation:

first, you have to multiply 150x2=300

next, you have to add 150+300= 450