Solve the problem.Find out how long it takes a $3400 investment to earn $400 interest if it is invested at 9% compounded semiannually. Round to the nearest tenth of a year. Use the formula 
A. 1.1 years
B. 1.5 years
C. 1.7 years
D. 1.3 years
Answer: D
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Find the vertices and foci of the ellipse.
+ 
= 1
A. Vertices: (±15, 0); Foci: (±9, 0) B. Vertices: (±15, 0); Foci: (±12, 0) C. Vertices: (0, ±15); Foci: (0, ±12) D. Vertices: (0, ±15); Foci: (0, ±9)
Find the flux of the vector field F across the surface S in the indicated direction.F = 5xi + 5yj + z3k; S is portion of the cylinder x2 + y2 = 16 between z = 0 and z = 3; direction is outward
A. 480? B. -480? C. 240 D. 480
Solve the problem.A cable TV company charges $22 for the basic service plus $8 for each movie channel. Let y be the total cost in dollars of subscribing to cable TV, using x movie channels. Find the slope-intercept form of the equation.
A. y = 22x - 8 B. y = 8x + 22 C. y = 22x + 8 D. y = 8x - 22
Find the missing angle.
A. 153° B. 145° C. 163° D. 167°