If you would like to know which expression is equivalent to 2.2 - 0.5 * (0.6 * x - 1.8), you can calculate this using the following steps:
2.2 - 0.5 * (0.6 * x - 1.8) = 2.2 - 0.5 * 0.6 * x + 0.5 * 1.8 = 2.2 - 0.3 * x + 0.9 = 3.1 - 0.3 * x
The correct result would be D) 3.1 - 0.3 * x.
