To bake $100$ of his favorite cookies, Mr. Wallis needs $350$ grams of sugar.

1. How many grams of sugar would he need to bake $10$ cookies? What about $20$ cookies? Show all work.

   Hint (a):

   You can use a proportion to solve this problem. Once you find the amount of sugar necessary for $10$ cookies, simply multiply by $2$ to find the amount necessary for $20$ cookies.

2. To help him know how much sugar to use when baking cookies, Mr. Wallis started to make a table, as shown at right. Copy and complete his table on your paper. 

   Hint (c):

   Proportions, again, will be very useful. A sample proportion is provided below.

   $\frac{100\text{ cookies}}{350\text{ grams}}=\frac{2\text{ cookies}}{x\text{ grams}}$

   $x=7$