Draw a line tangent to the circle whose equation is (x-2)^2+y^2=20 at the point (0, 4). Write an equation for this tangent line. Explain your work.

Megan is making bracelets to sell to earn money for the local animal shelter. it takes her 1/4 hour to pick out all the beads and 1/10 hour to string them.this week, she only has 5 1/4 hours to make bracelets. how many bracelets will megan be able to make?