What are the vertex, focus, and directrix of the parabola with the equation x^2+y^2-8x+4y+4=0?

vertex (4, –3); focus (4, –4); directrix y = –2vertex (–4, 3); focus (–4, –1); directrix y = 7vertex (4, –3); focus (4, –7); directrix y = 1vertex (–4, 3); focus (–4, 2); directrix y = 4

Eric drew a scale drawing of a country park. the scale he used was 1 inch = 2.5 yards. the picnic area is 80 yards wide in real life. how wide is the picnic area in the drawing ?

Tamera puts 15/4 gallons of gasoline in her car. which mixed number represents the gallons of gasoline? a) 2 3/4 gallons b) 3 1/4 gallons c) 3 3/4 gallons d) 4 1/2 gallons answer it's worth a lot of points!

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?