The arithmetic mean of the monthly salaries of two people is $4413. one person earns $3110 per month. what is the monthly salary of the other person?

The average number of vehicles waiting in line to enter a parking lot can be modeled by the function f left parenthesis x right x squared over 2 left parenthesis 1 minus x right parenthesis endfraction , where x is a number between 0 and 1 known as the traffic intensity. find the rate of change of the number of vehicles waiting with respect to the traffic intensity for the intensities (a) xequals0.3 and (b) xequals0.6.

Determine the area of a triangle with (see picture below)

Can anyone explain to me how to do this? anything will .