Acookie recipe calls for 1 cup of white sugar and 3 cups of brown sugar

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.

What percent of 18 is 24? and plz explain thx.

What is r i 4.5+10r=-6.5 with work pls