Step-by-step explanation:
Juan wants each balloon string to be 6 feet long.
Number of balloons bought = 43
Length of string = 6 feet
Total length of string required = 43 x 6 = 258 feet
Given that
86 yards of string is required
By Law of Indices, a^m * a^n = a^(m+n).
Therefore 8³ * 8⁵ = 8^(3+5) = 8⁸.