Answer:
hi rojithapo
Step-by-step explanation:
my name is Naveen I am indian not China
my look like China boy
Step-by-step explanation:

Answer:
150 feet
Step-by-step explanation:
There are 10 marks between the 1st and 11th mark.
Since each mark represents 5 yards, 10 * 5 = 50 yards
Since 1 yard = 3 feet
50 yards = 50 * 3 = 150 feet
4(d-1), if you expand it gets 4d-4.