a circle is defined by the equation given below
12 + y2 - 1 - 2y - w = 0
what are the coordinates for the center of the circle and the length of the radius?
on ( -1), 2 units
ob. 2 units
oc. , -1), 4 units
od. ), 4 units

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Aschool puts on a play. the play costs $1,200 in expenses. the students charge $4.00 for tickets. there will be one performance of the play in an auditorium that seats 500 people. what is the domain of the function that shows the profit as a function of the number of tickets sold?  

Compare the cost of the bike trips from the two companies shown. for both the cost in a linear function of the number of days which statements is true