Can somebody explain in simple terms how to find probability involving the word "and"

40 describe the outliers from the scatter plot.

What is the 12th term of b(n)=-4-2(n-1)

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?