What is the difference of 23x and 9x

(40 points) i need some . an answer definition is appreciated as well.

In triangle opq right angled at p op=7cm,oq-pq=1 determine the values of sinq and cosq

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.