Vocabulary
choose the best term from the box to complete each definition.
inverse operations
like terms
proportion
variables
are terms that have
1. in an algebraic expression,
the same variables raised to the same exponents.
2. quantities that represent an unknown value are
3.a
is a statement that two ratios are equal.
4. operations that "undo" each other are
entify like terms
plete the statements to identify the like terms in each expression.
2x + 7y - 62 +6y - 9x
6. 1/5 - (6u - 9u) + 1/10 t + 25
x and are like terms.
1/3 and are like terms.

1. an economy consists of three workers: larry, moe, and curly. each works 10 hours a day and can produce two services: mowing lawns and washing cars. in an hour, larry can either mow one lawn or wash one car; moe can either mow one lawn or wash two cars; and curly can either mow two lawns or wash one car. a. calculate how much of each service is produced under the following circumstances: a. all three spend all their time mowing lawns. b. all three spend all their time washing cars. c. all three spend half their time on each activity d. larry spends half of his time on each activity, while moe only washes cars and curly only mows lawns b. using your answers to part a, draw a production possibilities frontier and label points a, b, c, and d on your graph. explain why the production possibilities frontier has the shape it does. c. are any of the allocations calculated in part a inefficient? explain.