I believe it should be (c)?
Answer:
100( 1 - (9/10)^75 )
Step-by-step explanation:
as common ratio is 9/10
250 is the correct answer for this problem
A handy conversion to remember is that 60 mph equals 88 feet per second.
Therefore, 50 mph will be (5/6) of 88 feet per second or 73.3333333333 feet per second.