At a restaurant, a hamburger costs $0.95 and a chicken sandwich costs $1.60. If 20 more hamburgers than chicken sandwiches were sold, and $103.15 was earned in total, how many of item was sold. (SHOW YOUR WORK)

Imagine a new pasture with grass growing on it. every day after the seeds have germinated, the number of blades of grass in the pasture triples. after 18 days, the entire pasture is completely covered in grass. how many days did it take for the pasture to be one-third covered in grass?

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12