Add. -4.043 + (-5.398)
A. -9.441
B. 21.824
C. -1.355
D. 9.441
Answer: A
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Evaluate the expression for the given value of the variable.2x2 + 3x - 7 for x = -1
A. -2 B. -12 C. -6 D. -8
Simplify the expression. Assume all variables represent positive real numbers.
A. 6
B. 29
C. 4
D. 9
Solve the problem.After two years on the job, an engineer's salary was $40,000. After seven years on the job, her salary was $46,000. Let y represent her salary after x years on the job. Assuming that the change in her salary over time can be approximated by a straight line, give an equation for this line in the form y = mx + b.
A. y = 6000x + 40,000 B. y = 1200x + 37,600 C. y = 1200x + 40,000 D. y = 6000x + 28,000
Identify the probability statement as empirical or not.The probability that a brand-name computer hard drive will crash during its first year of use is 0.10.
A. Empirical B. Not empirical