A bookstore had copies of a magazine. Yesterday, it sold of them. Today, it sold of what remained. How many copies does the bookstore have left?

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1

Plz answer asap! i will reward brainliest and 12 points for these three questions!take notice: these three questions are completely different! 1) what is the percentage of sugar in the syrup made of 10 kg of water and 4 kg of suugar? 2) what was the original price if after 10% discount it became $450? 3) at first a price was decreased by 12%, then it was disounted again by an additional 5%. what is the percent of the total discount? , and remeber i will award brainliest and 12 points!