Please help me find the answer to the question

What is the volume of a rectangular prism if the length is 10.4 mm the width is 5 mm in the height is 8 mm

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.

X+ y = 5 ; x - y =3 solve using linear combination