Dennis will run 9 miles in 1 hour. Cindy will run 12 miles in one hour. Cindy will run 3 miles farther than Dennis in 1 hour.
Answer:
c
Step-by-step explanation:
toook twst
r=-3, n=8, a_1=3
S = 3(1 - (-3)^8)/(1 - -3) = -4920
Choice C
Answer:
15
Step-by-step explanation:
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