Final answer:
Greta has 4.08 grams of pepper left.
Step-by-step explanation:
Greta had 4.78 grams of pepper. She used 0.7 grams of the pepper to make scrambled eggs. To find out how much pepper Greta has left, we need to subtract 0.7 grams from 4.78 grams.
4.78 g - 0.7 g = 4.08 g
Greta has 4.08 grams of pepper left.