Business Mathematics Certification Exam Tests

Business Mathematics Practice Test 33

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*In the computation of determinant of a matrix, significant efficiencies are introduced by combining row to another which*

- contains subtraction
- contains zero
- contains ones
- contains addition

b

*The formula of total cost is*

- variable cost + fixed cost
- marginal cost + fixed cost
- marginal cost + variable cost
- variable cost - fixed cost

a

*The values for a = 1, b = -2 and c = 1 and by substituting these in the quadratic formula, the value of 'x' is*

- 1
- −1
- 2
- −2

a

*In the exponential function class ƒ(x) = b ^{x} where b > 1, the range is set of*

- positive variables
- negative variables
- positive real numbers
- negative real numbers

c

*The quadratic function is considered as*

- third-degree polynomial function
- four-degree polynomial function
- first-degree polynomial function
- second-degree polynomial function

d

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