In Proportion (I need to finish this please help!)

Proportionality occurs often in real life. It's important to know what should change and what should not. Consider each situation.

 

1. A recipe for baking 30 brownies includes these details. 

• 4 ounces of chocolate
• A 350º oven
• 2 cups of sugar
• 1 cup of flour
• A 9-inch-by-13-inch-by-2-inch pan
• 25 minutes baking time

Here is the image for the rest of the problems: https://imgur.com/a/EstKS0s (#1 Continues on the image).