Amelia is using substitution to determine if 8 is a solution to the equation. Complete the statements. 6a = 42 for a = 8

First, Amelia must substitute 8 for the
using
.

To simplify, Amelia must
.

8
a solution of the equation.

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.