When money is used in a trade instead of the direct exchange of goods, it acts as a a. unit of account b. trade equalizer c. currency converter d. medium of exchange

There is a liquid capsule inside a cup full of liquid. the cup full of liquid has salt in it and the liquid capsule has no salt in it. in which direction will the solvent flow? a. the salt does not have to move b. from the capsule to the larger cup c. equally between the capsule and the cup d. from the larger cup to the capsule

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion

Antoine manages a number of apartment buildings that use natural gas for heating, cooking, and laundry. the scatter plot shows the correlation between the outside air temperature and antoine's natural gas bill. which type of correlation does the plot illustrate?