Find the second derivative of the function.r = 
(7 - ?)
A. 
= 
- ?
B. 
= - 
- 1
C. 
= 
D. 
= - 
- 1
Answer: C
Mathematics
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Use the properties of equality to solve the equation.
?
?
A.
B.
C.
D.
E.
none of these
Mathematics
Perform the operation. Write the answer as a fraction in lowest terms.6
- 2
A. 
B. 25
C. 
D. 
Mathematics
Find an equivalent expression for the number, using the denominator indicated.
= 
A. 
B. 
C. 
D. 
Mathematics
Solve. If necessary, round answers to the nearest hundredth.15 students were asked how much cash they had with them and the results were recorded.28, 31, 21, 16, 0, 5, 2, 52, 105, 26, 21, 78, 57, 14, 17How many students had more cash than the mean?
A. 5 B. 11 C. 4 D. 7
Mathematics