I hope this helps you
8/9/80
8/9.80
1/90
20/100 could be converted to 2/10 or 1/5
2/8 could be converted to 1/4
90/100 could be converted to 9/10
Use the distribution property for #10
(x+12)(x-5)
=x^2-5x+12x-60
=x^2+7x-60
not too sure abt the others
B.
You can factor these by finding the square roots of the end terms and then using +/- in the middle of each one.
Answer:2 1/4 cups of flour for 9 servings Hope its helps ;)
