Select the situation in which one quantity is changing at a constant rate in relation to the other quantity. a. barry spends $9 on lunch daily. b. the market value of a new computer decreases by 6% every year. c. nathan's investments increase in value by 13.5% each month. d. the number of ants in a colony doubles every 8 weeks.

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.