I cannot write a formula to reflect the necessary conditions relative to the cost of barricades.
0 = 0
1-4 = $20
5-20 = $31
more than 20 = $38 plus $5 for each additional barricade over 20. So 21 barricades would be $38 + $5 = $43.00 / and 22 barricades would be $38 + $10 = $48 / and 23 barricades would be $38 + $15 = $53 / etc.
Can anyone help?
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