Give the largest interval where the function increases or decreases, as requested.f(x) = 2x2 + 1; increases
A. (-?, 0)
B. 
C. 
D. (0, ?)
Answer: D
Mathematics
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Use identities to find the exact value of the function for the given value.sec ? = and ? is in quadrant I; Find tan ?.
A. 
B. 
C. - 
D. 
Mathematics
Multiply.-5(-4)(3)
A. -60 B. 50 C. 160 D. 60
Mathematics
Use back-substitution to solve the system of linear equations below.
A. 
B. 
C. 
D. 
E. 
Mathematics
Determine whether the value of x = 5 is a solution of the equation.
?
?
A. No B. Yes
Mathematics