Solve the equation for the interval [0, 2?).4 sin2x = 4 cos x + 1
A. 
, 
B. No solution
C. 
, 
D. 
, 
Answer: C
Mathematics
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Write the expression in i notation.
A. ±5
B. -5i
C. -i
D. 5i
Mathematics
Solve the problem.A stone is thrown into a pond. A circular ripple is spreading over the pond in such a way that the radius is increasing at the rate of 2.3 feet per second. Find a function, r(t), for the radius in terms of t. Find a function, A(r), for the area of the ripple in terms of r. 
A. (A ? r)(t) = 5.29?t2 B. (A ? r)(t) = 4.6?t2 C. (A ? r)(t) = 2.3?t2 D. (A ? r)(t) = 5.29?2t
Mathematics
Graph the equation.y = - 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The number of mosquitoes M(x), in millions, in a certain area depends on the June rainfall x, in inches: 
What rainfall produces the maximum number of mosquitoes?
A. 0 in. B. 1.5 in. C. 9 in. D. 3 in.
Mathematics