Which algebraic expression has like terms?

9 n cubed minus 2 n + 3 minus 4 n squared

7 n cubed + 3 n minus 3 minus 6 n squared

7 n cubed + 4 n minus 3 n cubed minus 5 n squared

6 n cubed minus 4 n Superscript 4 Baseline + 6 n minus 5 n squared

Which situation could best be represented by this linear equation? 24x + 38y = 520 > if x represents the number of bracelets and y represents the number of rings, there were 24 more bracelets sold than rings. the total sales were $520. if x represents the number of bracelets and y represents the number of rings, there were 38 more bracelets sold than rings. the total sales were $520. if x represents the number of bracelets sold at $24 each and y represents the number of rings sold at $38 each, the total sales were $520 if x represents the number of bracelets and y represents the number of rings, there were 520 bracelets and rings sold. bracelets were $24, and rings were $38. e