On Friday a bowling alley made $842.72 from Lane rentals in $412.38 from the concession stand. on Saturday they're lane rentals are down by 1/8 but the concessions increased by 1/2 what is the total amount at the bowling alley earn in Lane rentals in concessions on Friday and Saturday?

$1,355.95
$1,580.10
$1,992.48
$2,611.05

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?

Which is the graph of this function 3 square root of x plus one if

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