Answer:
C
Step-by-step explanation:
The n th term formula of a geometric sequence is
= a 
where a is the first term and r the common ratio
Using the second and fourth term, then
ar = 6 → (1)
ar³ = 54 → (2)
Divide (2) by (1)
= 
= 9
r² = 9 ⇒ r = 
= 3 → C
To get the constant of proportionality (unit rate) you must find the miles driven in 1 hour. To get this you simply divide 200 by 4...
200÷4=50
So, the constant of proportionality is 50 mph.
The same as the last question. B the second option.
The units have to cancel out
1yard/3feet should be it
it is wrong since yards are bigger than feet so
379ft/1 times 1yd/3ft=379ydft/3ft=126.33333333yard
I would think the answer is 3, sorry if i cant help.
