Answer:
6 number of seashells for 1 Summer. 21 number of seashells for two summers. 36 number of seashells for three summers. 51 number of seashells for 4 summers.
Step-by-step explanation:
15 substituted in for f and x is the the number of summers.
345 km
9 divided by 3 = 3
115 x 3 = 345
16
2x2x2x2 = 16
no possible values is the correct answer
thank you
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