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. 126; 70
C. 15,120; 1680
D. 7560; 840
Answer: B
Mathematics
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Using Green's Theorem, compute the counterclockwise circulation of F around the closed curve C.F = (x2 + y2)i + (x - y)j; C is the rectangle with vertices at (0, 0), (2, 0), (2, 4), and (0, 4)
A. -24 B. 0 C. 40 D. 24
Mathematics
Find the x- and y-intercepts of the graph of the equation. y = 
A. x-intercepts: -8, 8; y-intercept: 8 B. x-intercept: 8; y-intercepts: -8, 8 C. x-intercept: 8; y-intercept: -8 D. x-intercept: 8; y-intercept: 8
Mathematics
Find the value of x, suppose ?a=61°, ?b=45°.
 figure 1.png)
a. 74
b. 151
c. 135
d. 106
Mathematics
State the domain of the given function.f(x) = 
A. x ? 
B. x > 
C. All x
D. x ? 
Mathematics