The explicit formula to represent the situation is aₙ = 11+4n.
An explicit formula calculates the nth term in a sequence. The formula is written in terms of n.
Given that, A tie-dye kit with one t-shirt costs $15. Each additional t-shirt costs $4 more.
Since, the first shirt costs = $15, and $4 extra is being taken,
So, cost for a tie-dye kit = $15-$4 = $11
For one shirt =
a₁ = $11+$4×1 = $15
So, for n shirts =
aₙ = 11+4n
Hence, The explicit formula to represent the situation is aₙ = 11+4n.
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