4x4x4x4x4x4x4x44x4x4x4x44x44x4x4x4x 4x4x4x4x4x4x4= do it with out a calculator

30 determine the coefficient on x 12 y 24 x12y24 in ( x 3 + 2 x y 2 + y + 3 ) 18 . (x3+2xy2+y+3)18. (be careful, as x x and y y now appear in multiple terms! )

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

Use multiples to write two fractions equivalent to 7/9. 14/18, 8/10 6/8, 21/27 10/12, 28/36 14/18, 21/27