Aj purchased a new tv for $1200 the regular price of the tv was 1500 what percent did aj say by buying it on sale

My favorite songstress gives away 25% of this side of her signature fragrance collection to her charity last month her sales were 1200 how much of her sales did she donate

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*