What does w equal if 1/2w+7=10

4+(2+x) can you me solve this problem

Kayla made observations about the sellin price of a new brand of coffee that sold in the three different sized bags she recorded those observations in the following table 6 is $2.10 8 is $2.80 and 16 is to $5.60 use the relationship to predict the cost of a 20oz bag of coffee.

Determine the solution for mc001-1.jpeg