Answer:
b
Step-by-step explanation:
2 3/2 is not equal to any of these
Answer:
r = -5
Step-by-step explanation:
common ratio (r) is found be dividing one term by its preceding term:
r = 275 ÷ -55 = -5
or, r = -55 ÷ 11 = -5
Therefore, r = -5
279.93 ≈ 280 seconds or 4 minutes 40 seconds
