Y=x2+8x+10. complete the square

Yahir designs bracelets. he uses between 9 and 15 red and yellow beads in the ratio of 2 red bead to 5 yellow beads. drag the beads into the container to meet these requirements

Complete the equation of the live through (-1,6) (7,-2)

Find the amount of simple interest earned for depositing the given principle in an account if $2200 is invested at 5.5 % for 6 months