Answer a and b! giving away 13 points

An ulcer medication has 300 milligrams in 2 tablets. how many milligrams are in 3 tablets?

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

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.