Which value of a from the set {3, 4, 5, 6} makes this equation true? a + 4(a − 5) = 5

What could explain what happened when the time was equal to 120 minutes

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.

9/10 divide by -3/15 as a mixed number