6n
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If n = 7, then 5n + 4 = 5 x 7 + 4 = 39.
5n + 2 = 5 x n + 2 So, when n = 6, that is 5 x 6 + 2 = 30 + 2 = 32.
5n + 7 = -41 5n = -48 n = -48/5 n = -9.6
5n+15 = 25 5n = 25-15 5n = 10 n = 2
Firstly to get 5n you times by 5!Next n3 (n cubed) is n x n x nTherefore you are timesing n by 5 and then by n and nSo 5n3 = times n by 5 x n x n or simplifyed n x 5n2