Priya bought these items at the grocery store. Find each unit price.

a. 12 eggs for $3. How much is the cost per egg?

b. 3 pounds of peanuts for $7.50. How much is the cost per pound?

c.4 rolls of toilet paper for 2$. How much is the cost per roll?

d. 10 apples for 3.50. How much is the cost per apple?

(Rates, ratios, double number lines.)