How do you find decimal percentages correctly

Simplify the expression and find the missing terms. the simplest form of has in the numerator and in the denominator.

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

Mike wants to make meatloaf. his recipe uses a total of 8 pounds of meat. if he uses a 3 to 1 ratio of beef to pork, how much pork will he use? enter your answer as a mixed number in simplest terms.