John sells hamburgers ($3) and cheeseburgers ($3.50). one afternoon he sells a total of 24 burger for $79. how many of these were hamburgers and how many cheeseburgers?

Ineed to know the answer to this algebra question.

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%