Acorporation has agreed to donate money to a charity organization each time one of its employees donates to that charity organization. the corporation donates $3 for every $2 donated by an employee. the total amount the corporation donates to the charity organization is proportional to the total amount that its employees donate. write an equation representing the relationship between c, the amount the corporation donates, and e, the amount its employees donate.

The dependent variable here is "c" - the amount of money donated by the corporation only changes based on how much is donated by the employees. So when setting up our equation, "c" will be by itself on one side: 

c = 

$3 for every $2 is written as a fraction, since this is a proportional relationship: 



The independent variable here is "e" - the amount of money donated by the employees changes by itself. So when setting up our equation, "e" will be placed next to the proportion: 



Our final equation will be: 

c = 

Period is the time it takes for one “cycle” to complete. in the parent sine function, period is 2*pi since sin(0) = 0, sin(pi/2) = 1, sin(pi) = 0, sin(3pi/2) = -1, and sin(2pi) = 0. at that point, the sequence repeats itself. i’m not sure if your graph is similar to the sine function since you didn’t provide a picture, but you can find the period by looking at a graph.