Can someone answer this question i’ll literally do annnyythhinnngg number 25

In the 30-60-90 triangle below side s has a length of and side r has a length

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.

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16