Solve the problem.Mary finds 9 fish at a pet store that she would like to buy, but she can afford only 5 of them. In how many ways can she make her selection? How many ways can she make her selection if he decides that one of the fish is a must?
A. 3024; 1680
B. 7560; 840
C. 126; 70
D. 15,120; 1680
Answer: C
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Evaluate the integral.
A. - 
csc 7t cot 7t - 
ln
+ 
+ C
B. - 
csc 7t cot 7t + 
ln
+ C
C. - 
csc 7t cot 7t - 
ln
+ C
D. 
csc 7t cot2 7t - 
ln
+ C
In the indicated voting system, the weights represent, in order, voters A, B, C, and so on. Write out all of the winning coalitions.[23 : 3, 5, 6, 8, 9]
A. {A, B, C, D, E}, {B, C, D, E}, {A, C, D, E}, {A, B, D, E}, {A, B, C, E}, {C, D, E}, {C, D}, {D, E} B. {A, B, C, D, E}, {B, C, D, E}, {A, C, D, E}, {A, B, D, E}, {A, B, C, E}, {C, D, E} C. {A, B, C, D, E}, {B, C, D, E}, {A, C, D, E}, {A, B, D, E} D. {A, B, C, D, E}, {B, C, D, E}, {A, C, D, E}, {C, D, E}
Find the value of the variable that satisfies the equation.
x - 4 = 1
A. x = 30 B. x = -30 C. x = -18 D. x = 18
Evaluate the square root.
A. 
B. 
C. 
D. 