D i believe please correct me if i’m wrong
In 1 hour, a machine could make:

parts
In 28.8 hours, that machine make

parts
-3 would be before the zero and the point would be on the 3.3 on the line
Step-by-step explanation:
When two lines are perpendicular to each other, the product of their slopes is equal to - 1
Here, slope of one line is -2/5
let the slope of another line be m
Therefore, m(-2/5)= -1
=> m = 5/2
option B