Solve.x2 = 81
A. 40.5
B. -9, 9
C. -10, 10
D. 9
Answer: B
Mathematics
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Solve the initial value problem.
= e-t sec2 (?e-t ), y(-ln 10) = 
A. y = 
B. y = 
C. y = cot (?e-t ) + 7
D. y = 
Mathematics
For the compound inequality, give the solution set in both interval and graph forms. 8x + 9 ? 1 or 8x + 9 ? 33
A. (-?, 3]
B. [-1, 3]
C. (-?, -1] ? [3, ?)
D. [-1, ?)
Mathematics
Graph the ellipse. Label the foci and the endpoints of each axis.4x2 + 16y2 = 64
A. F(0, ±2
); V(0, ±4); U(±2, 0)
B. F(±2
, 0); V(±4, 0); no endpoints
C. F(±
, 0); V(±5, 0); U(0, ±2)
D. F(±2
, 0); V(±4, 0); U(0, ±2)
Mathematics
Find the vertices of the hyperbola.
- 
= 1
A. (-3, -3) and (9, -3) B. (3, -1) and (3, -5) C. (-3, 5) and (-3, 1) D. (-9, 3) and (3, 3)
Mathematics