One bag of cookies weighs 6 ounces. How many pounds will 20 bags weigh? Give your answer in pounds and ounces.

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

The lengths of nails produced in a factory are normally distributed with a mean of 4.91 centimeters and a standard deviation of 0.05 centimeters. find the two lengths that separate the top 4% and the bottom 4%. these lengths could serve as limits used to identify which nails should be rejected. round your answer to the nearest hundredth, if necessary.

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.