Bill and Ted cut their own lawns every week. But one week, Bill cut Ted’s lawn for $50 and Ted cut Bill’s lawn for $50. (Everything was properly recorded). Then:

The law of demand says:

Which of the following is most correct regarding the cause of a country’s GDP per capita:

All else equal, if the price of gasoline goes up, then:

The country of Fruitland produces 2 goods: Oranges and Pears, both consumed by its citizens. The following table shows the prices and quantities for these goods in 2021 and 2022. Year Price of Oranges Quantity of Oranges Price of Pears Quantity of Pears 2021 $1 5 $1 4 2022 $2 6 $3 1 What is Real GDP in 2022 (base year: 2021)?

Which of the following chemical expressions refers to the first ionization energy of calcium?

Excited sodium atoms emit light in the infrared at 589 nm. What is the energy of a single photon with this wavelength?

Rotation on a posteroanterior (PA) projection of the chest, in the left lateral decubitus position, is best detected by evaluating the: 

What is the electron configuration of S2−?

Bonus C Tuberculosis (TB) is a type of bacteria infection in the chest.  Identify how is TB transmitted, contact, droplet, or airborne according to  standard precautions.