A fuel producer is formulating a fuel mixture that contains 49% ethanol. To make this fuel, they will take 500 liters of 30% ethanol fuel and add some 68% ethanol fuel. How much of the 68% ethanol fuel should be added

Twenty-five percent of the customers entering a grocery store between 5 p.m. and 7 p.m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

[15 points, algebra 2]simplify the complex fraction and find the restrictions.