The following is an example of a variable interval schedule of reinforcement: A. For every 60 minutes that Jacob practices the violin, he earns $1 from his parents.
B. For every 3 songs Jacob practices on his violin, he earns $1 from his parents.
C. Jacob's parents place a dollar bill in his piggy bank when he practices his violin for an average of 8 songs.
D. Jacob's parents place a dollar bill in his piggy bank when he plays his violin for an average of 60 minutes each day.

Troy is the ceo of a manufacturing company, and he is planning to open a new factory in his community.because the new factory will require heavier traffic from delivery trucks and employees' cars, troy is partnering with the city to expand and rebuild roadways in the neighborhood.as part of opening the factory, he also plans to create a new hiring program. because he wants his workers to gain skills, he will also offer them the opportunity to attend college courses to receive business training. which of these outcomes are possible negative externalities? check all that apply. increased traffic in the neighborhood surrounding the factory better roads for drivers in the area more educated workers in the community pollution from trucks making deliveries to the factory new job opportunities in the city

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2. explain the two different types of egyptian calendars. 3. what architectural advances did the ancient egyptians make? what impact do these advances have on our lives today? 4. what did egyptian art usually depict? how does this compare to forms of art that we see today? 5. what all was found in king tut’s tomb?