Which equation is the equation of a 10 cm radius circle with its center at begin ordered pair (3, -6)

(x-3)squared + (y+6)squared=20
(x-3)squared + (y-6)squared=20
(x-3)squared + (y+6)squared=100
(x-3)squared + (y-6)squared=100

Kelly is a salesperson at a shoe store, where she must sell a pre-set number of pairs of shoes each month. at the end of each work day the number of pairs of shoes that she has left to sell that month is given by the equation s=300-15x , where s is the number of pair of shoes kelly still needs to sell and x is the number of days she has worked that month. what is the meaning of the number 300 in this equation

Which of the following is true for the relation f(x)=2x^2+1

Can some one explain how to slove specifically, what is the value of x? 0.9(x+1.4)-2.3+0.1x=1.6 enter the answer as a decimal in the box. x= ?