Solve the equation.
- 
= 
A. 30
B. -5
C. 
D. 5
Answer: B
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Evaluate the spherical coordinate integral.
A. 
B. 10
C. 10?
D. 
?
Find the domain of the logarithmic function.f(x) = ln(-7 - x)
A. (-?, -7) B. (-?, 7) C. (-7, ?) D. (7, ?)
Use the graph of the polynomial function f(x) to solve f(x) = 0.
A. 1, 3 B. -3, -1 C. -4, -1, 1, 4 D. -3, -1, 1, 3
Write a system of equations and use the inverse of the coefficient matrix to solve the system.A company makes 3 types of cable. Cable A requires 3 black, 3 white, and 2 red wires. Cable B requires 1 black, 2 white, and 1 red wires. Cable C requires 2 black, 1 white, and 2 red wires. They used 100 black, 110 white and 90 red wires. How many of each cable were made?
A. 10 cable A 103 cable B 20 cable C B. 10 cable A 30 cable B 93 cable C C. 10 cable A 30 cable B 20 cable C D. 20 cable A 93 cable B 10 cable C