An adult (m) is 400 minutes less than twice a teen. How much screen time does the average adult (m) have? I need the answer to be written as an EQUATION and solved, please. FAST!!

What term makes it inconsistent y=2x - 4

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.

Can someone check if i did this correct. it’s number 4 if you’re wondering.