PLZ HELP ASAP The circle is centered at the point (4,5), and the length of its radius is 3. what is teh equation of the circle?

a) (x-4)^2 + (y-5)^2 = 9

b) (x+4)^2 + (y+5)^2 = 3

c) (x-5)^2 + (y-4)^2 = 9

d) (x^2-4) + (y^2-5) = 3^2

The area of square garden is 300m squared. how long is the diagonal?

40) linda was making chocolate truffles for the first day of school. the recipe for 20 chocolate truffles is: i cup of cream 2 cups of dark chocolate she noticed this will not be enough truffles for the 42 sure that all students in each homeroom next year. to be sure that all students receive a truffle, linda must adjust her recipe. a. complete the recipe for 42 truffles cups of cream - cups of dark chocolate work:

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /