Please tell me the answer. I am so confused.

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.

State if the two triangles are congruent. if they are, state how you know?

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.