Mark all the statements that are true please help

Nine people are going to share a 128-ounces bottle of soda. how many ounces will each person get drink? choose the correct equation and answer for this situation

How many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.) how many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.)

Given that the images represent 4 steps in the construction of a line segment congruent to a given line segment, which is step 3 in the construction?