Elsa knows that for every bushel of apples she sells she earns $9 and for every basket of pears she earns $11. she uses the expression 9a + 11p to keep track of her earnings.

part a: identify the coefficients and variables in the expression. (3 points)

part b: how many terms are in the expression, what are they, and how do you know? (4 points)

part c: which term in the expression shows the total earned from selling baskets of pears? (3 points)

i only need with b and c ?

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