Mrs. Palmer's famous peanut butter cookies call for 1 cup of peanut butter for every 1
2
of a cup of oil. Today, she wants to make a huge batch with 1 cup of oil. How much peanut butter should she use?

2 cups

Step-by-step explanation:

if she uses 1/2 cup of oil per 1 cup of peanut butter

then she should use the ratio PB(peanut butter)= 2O(oil)

so if oil is 1 then PB must be 2 cups

Four Common Tangents, (n = 4)

Step-by-step explanation:

The next to last case is where the centers of the circles are far enough apart that the circles are completely separated. This is probably the most common case, and is defined by the relationship: d > a + b. There are 2 internal common tangents and two external common tangents.

not sure it's help!

sorry