lisa walked x kilometers. mary walked 2/7 less than that. write an expression to represent how far Mary walked.

In trapezoid klmn, kj=19.2 and jm=22.5. identify ln.

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.

Math it's appreciated. (picture provided)