Please answer all 4 questions and in examples

Solve for x -2.3(r - 1.2 ) = -9.66 enter you answer as decimal.

Helll ! 1,400 tons of wheat of two different varieties was delivered to the silo. when processing one variety, there was 2% of waste and 3% during the processing of the second variety of wheat. after the processing, the amount of remaining wheat was 1,364 tons. how many tons of each variety of wheat was delivered to the silo?

Suppose the equation ||x-a|-b|=2008 has 3 distinct real roots and a not =0. find the value of b.