list five items you would like to buy. How does the price of each item affect your decision to allocate your scarce resources your money and your time ? Describe the way in which prices act as signals to help you make your decisions.

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27

k2s for potassium sulphide

the answer should be in the picture.