Find the inverse of the function.j = {(4, 2), (2, 3), (0, 4), (-2, 5)}
A. j-1 = {(2, 4), (3, 2), (4, 0), (5, -2)}
B. j-1 = {(3, 2), (5, 0), (4, 0), (3, 4)}
C. j-1 = {
, 
, 
, 
}
D. j-1 = {(3, 2), (2, 0), (4, 2), (3, 4)}
Answer: A
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A. About 48 students B. About 12 students C. About 72 students D. About 80 students
Solve the system by graphing. If the system is inconsistent and has no solution, state this. If the system is dependent, write the form of the solution for any real number x.6x + y = 276x + y = 45
A. (24, -117) B. (18, 9) C. Inconsistent, ? D. Dependent, (x, - 6x + 27)
Find the integral.
dx
A. 
+ C
B. 7x7 + C
C. 6x5 + C
D. 
+ C
The rate of change of atmospheric pressure P with respect to the altitude above sea level h is proportional to the pressure. That is, 
. Suppose that the pressure at sea level is denoted by 
and at 14,000 ft, the pressure is half of what it is at sea level. Find the pressure, as a percent of
class="wirisformula" data-wiris-created="true" src="https://sciemce.com/media/3/ppg__cognero__Chapter_12_Indefinite_Integrals__media__ede8feb5-7efd-49e7-8e6d-74c02af04db7.PNG" style="vertical-align:middle;" /> at 27,000 ft. ? A. 39.5% B. 29.9% C. 24.3% D. 26.3% E. 23.1%