Please help asap I need help 25 points

If i have a 24 in loaf of bread and i cut it into two pieces one 9 in how long was the other

Evaluate the expression for the given value of the variable 7a - 4a for a =8

Sheila wants to bake six muffins but the recipe is for 12 muffins . this means you only need half of the ingredients listed how much of the of each ingredient does she need? one cup and banana chips ,7 tablespoons oil , two eggs, 3/4 cups flour 1/4 cup walnuts show all you work and justify your answer using a baby toulmin.