Aria is a songwriter who collects royalties on her songs whenever they are played in a commercial or a movie. Aria will earn $20 every time one of her songs is played in a commercial and she will earn $80 every time one of her songs is played in a movie. Aria earned a total of $400 in royalties on 11 commercials and movies. Determine the number of commercials and the number of movies on which Aria's songs were played.

There is diarrhea on the floor. what do i do? my mum gonna see that i diarrhea on the floor! * don't report, i'm serious! *

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin

Amajor grocery store chain is trying to cut down on waste. currently, they get peaches from two different distributors, whole fruits and green grocer. out of a two large shipments, the manager randomly selects items from both suppliers and counts the number of items that are not sell-able due to bruising, disease or other problems. she then makes a confidence interval. is there a significant difference in the quality of the peaches between the two distributors? 95% ci for pw-pg: (0.064, 0.156)