To what place value is the number rounded? 5.319 to 5.3

Plz which expression is equivalent to the expression below?

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.

Give all possible names for the line shown.calculation tip: lines can be written with either point first.