Ethan was surveying his field and saw some cows and ducks. Ethan counted a total of 74 heads and 258 legs. Assuming there are no mutations in the animals, determine exactly how many ducks and cows he saw.
Let X represent the number of ducks and y represent the cows.
Total Equation:
2 + y = 74
Legs Equation:
2x + 4y= 258
How many ducks?
How many cows?

Tyler went to the supermarket to buy food for a food pantry. he has $36, and can carry up to 20 pounds of food in his backpack. pasta costs $1 for a 1-pound package. pasta sauce costs $3 for a 1.5 pound jar. let x = the number of packages of pasta and y = the number of jars of pasta sauce. one package of pasta is the right amount to go with one jar of pasta sauce. what is the best numbers of packages of pasta and jars of pasta sauce to buy for the food pantry? how many packages of pasta? how many jars of pasta sauce? explain your reasoning.