DeShawn’s Detailing is a service that details cars at the customers’ homes or places of
work. DeShawn’s cost for a basic detailing package is $40, and he charges $75 for this
service. For a total price of $90, DeShawn will also detail the car’s engine, a service that
adds an additional $20 to the total cost of the package. What is DeShawn’s marginal
benefit if he sells a basic detailing package?
A) $35
B) $75
C) He makes a marginal loss of $15, not a marginal benefit.
D) The marginal benefit cannot be determined.
If the price of toothpaste is represented by equation P = 40 – .5QD, then the
corresponding quantity of toothpaste demanded is represented by the equation
A) QD = 20 – .5P.
B) QD = 40 – P.
C) QD = 80 – 2P.
D) QD = -20 + P.
The growing popularity of energy conservation has enticed large home improvement
stores like Home Depot and Lowes to offer tankless water heaters. How does the fact
that home improvement stores now offer these products affect the tankless water heater