Find the cardinality of the set {15, 30, 60, 120, 240}.
a. 465
b. 15
c. 240
d. 5
e. 60
d. 5
Mathematics
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Find all the second order partial derivatives of the given function.f(x, y) = x2 + y - ex+y
A. 
= 2 - y2ex+y; 
= -x2ex+y; 
= 
= - y2ex+y
B. 
= 2 - ex+y; 
= - ex+y; 
= 
= -ex+y
C. 
= 1 - ex+y; 
= - ex+y; 
= 
= -ex+y
D. 
= 2 + ex+y; 
= ex+y; 
= 
= ex+y
Mathematics
Factor out the common factor. ? ?45q - 5 ?
A. 5(40q) B. 5(9q) C. 5(9q - 1) D. 45(q - 1) E. 45(q + 1)
Mathematics
Use the rules for exponents to rewrite the expression and then evaluate the new expression. 
A. -14 B. -5 C. 0 D. 1
Mathematics
Solve.
+ y = -2
A. - 
B. 
C. -16
D. - 
Mathematics