 
<translate> Ọ bụrụ na o jiri coupon ahụ mee ihe, ọ ga-akwụ 2 * 0.5 = $1 maka ngwugwu 4oz ọ bụla. Ya mere, ọ ga-akwụ 4 + 2 * 1 = $6 n'ozuzu maka ngwugwu 8oz na ngwugwu 4oz abụọ ọ chọrọ iji ruo 16 oz nke bọta mgbe ọ na-eji Kupọns. N'ihi ya, ego kasị nta ọ pụrụ ịkwụ bụ $6, ebe ọ bụ na nke a dị ọnụ ala karịa ọnụ ahịa $7 maka ngwugwu 16 oz. Azịza ya bụ: 6. <eng> If she uses the coupon, she will pay 2 * 0.5 = $1 for each 4oz package. Thus, she will pay 4 + 2 * 1 = $6 in total for the 8oz package and the two 4oz packages she needs to reach 16 oz of butter when using the coupon. Therefore, the lowest amount she can pay is $6, as this is cheaper than the $7 price for a 16 oz package. The answer: 6. 