It’s a simple algebra question please answer the picture

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.

For each proportion find the unknown number x 1/5/8=×/15

Find the condition that the zeros of the polynomial f(x) = x^3+3px^2+3px+r may be in a. p.