A customer can choose one of two amplifiers, one of three compact disc players, and one of five speaker models for an entertainment system. Determine the number of possible system configurations.
?
A. 40
B. 35
C. ?30
D. 25
E. 20
Answer: C
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Evaluate.Find (f + g)(-1) when f(x) = x + 5 and g(x) = x + 4.
A. -11 B. 7 C. -1 D. -3
Determine whether the relation is a function. Give domain and range of the relation.{(-1, -3), (-2, -2), (-2, 0), (2, 2), (14, 4)}
A. function; domain: {-1, 2, -2, 14}, range: {-3, -2, 0, 2, 4} B. function; domain: {-3, -2, 0, 2, 4}, range: {-1, 2, -2, 14} C. not a function; domain: {-1, 2, -2, 14}, range: {-3, -2, 0, 2, 4} D. not a function; domain: {-3, -2, 0, 2, 4}, range: {-1, 2, -2, 14}
Solve the equation. Identify the equation as an identity, an inconsistent equation, or a conditional equation.2(5f - 19) = 10f - 38
A. Inconsistent, ? B. Conditional, {all real numbers} C. Conditional, {1} D. Identity, {all real numbers}
Simplify. Assume that no radicands were formed by raising negative quantities to even powers.
A. 2x 
B. 2 
C. 6 
D. 2 