Label each scenario as proportional (P) or non-proportional (NP). If a scenario is proportional, calculate the k-value.
Response area 3 pounds of grapes cost $6.57 Response area
Response area Pizza Palace charges $8 per pizza plus a $3 delivery fee. Response area
Response area Jay has 2 pencils and buys a new one each week. Response area
Response area It takes 1.5 ounce of glue to make 12 ounces of slime.