The graph is a marginal cost curve that compares expenses for producing apple pies. A graph titled Marginal Cost of Producing Pies has quantity supplied on the x-axis, from 0 to 6 pies, and marginal cost on the y-axis, from 0 to 1 dollar and 60 cents in increments of 20 cents. The cost increases from 0 pies to 1 pie and then decreases to 3 pies. The cost again begins to increase at 4 pies. According to the graph, the marginal cost begins to increase when the producer makes two pies. three pies. four pies. five pies.

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

Bo is buying a board game that usually costs bb dollars. the game is on sale, and the price has been reduced by 18\%18%. what could you find the answer?

Agroup of student volunteers participates in a study designed to assess several behavioral interventions for improving output in a repetitive task. prior to the beginning of the study, all volunteers unknowingly observed, and their output is measured. at the beginning of the study, prior to any intervention, the volunteers perform the same task under the observation of a study administrator, and their overall output increases. which of the following terms describes this phenomenon? a. simpson's paradox b. hawthorne effect are d. novelty effect d. pygmalion effect e. observer-expectancy effect