Consider a circle whose equation is x2  +  y2  –  2x  –  8 = 0. which statements are true? check all that apply 1.the radius of the circle is 3 units. 2.the center of the circle lies on the x-axis. 3.the center of the circle lies on the y-axis. 4.the standard form of the equation is (x  –  1)² +  y²  = 3. 5.the radius of this circle is the same as the radius of the circle whose equation is x²  +  y²  = 9.

Colby and jaquan are growing bacteria in an experiment in a laboratory. colby starts with 50 bacteria in his culture and the number of bacteria doubles every 2 hours. jaquan starts with 80 of a different type of bacteria that doubles every 3 hours. let x equal number of days. colbys experiment follows the model: a.) y=50*2^x b.) y=50*2^8x c.) y=50*2^12x jaquans experiment follows the model: a.)80*2^x b.)80*2^8x c.)80*2^12x

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?

Aladder that is 20ft long is leaning against the side of a building. if the angle formed between the ladder and the ground is 75 degrees how far is the bottom of the from the base of the building?