Find the common ratio, r, for the geometric sequence.1, -3, 9, -27, 81, . . .
A. 3
B. -3
C. 81
D. -4
Answer: B
Mathematics
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Identify the type of surface represented by the given equation. y2 + z2 = 1
A.
| Ellipsoid |
B.
| Parabolic cylinder |
C.
| Paraboloid |
D.
| Cylinder |
Mathematics
Solve the problem.If f(x) = 6x + 15 and g(x) = 4x - 1, find f(g(x)).
A. 24x + 59 B. 24x + 9 C. 24x + 21 D. 24x + 14
Mathematics
Write the expression in lowest terms. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Mathematics
Solve the equation algebraically.x2 - 7x - 
= 0
A. 7 ± 
B. - 
± 
C. 
± 
D. 
± 
Mathematics