Answer:
2a
Step-by-step explanation:
-6 and +6 cancel out leaving the 2a by itself.
Distance = speed x time
distance time
45 ft 3.0 s
87 ft 5.8 s
166.5 ft 11.1 s
210 ft 14.0 s
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Step-by-step explanation:
3 : x = -7.5
5 : x = -10
6 : x = 12
remaining answers are correct