Use completing the square to solve for x in the equation (x + 7) (x minus 9) = 25.

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

25 ! the line of best fit is h = 5a + 86. predict the height at age 16.

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6