Drug epidemic in an epidemiological model used to study the spread of drug use, a single drug user is introduced into a population of n non-users. under certain assumptions, the number of people expected to use drugs as a result of direct influence from each drug user is given by
s=∫^[infinity]_0 a(1-e^-kt)/k e^-kt dt.
where a, b and k are constants. find the value of s.

Drag and drop the answers into the boxes to complete this informal argument explaining how to derive the formula for the volume of a cone. since the volume of a cone is part of the volume of a cylinder with the same base and height, find the volume of a cylinder first. the base of a cylinder is a circle. the area of the base of a cylinder is , where r represents the radius. the volume of a cylinder can be described as slices of the base stacked upon each other. so, the volume of the cylinder can be found by multiplying the area of the circle by the height h of the cylinder. the volume of a cone is of the volume of a cylinder. therefore, the formula for the volume of a cone is 1/3 1/2 1/3πr^2h 1/2πr^2h πr^2h πr^2

Lindsay used two points, (x, y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')