Graph.f(x) = 
A. 
B. 
C. 
D. 
Answer: A
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Provide an appropriate response.A set of data consists of the number of years that applicants for foreign service jobs have studied German and the grades that they receive in a proficiency test in that language. The following linear model is obtained: 
where x represents number of years of study and y represents grade in test. What does the slope of the model represent in terms of the grades on the test?
What will be an ideal response?
Solve the inequality by the test-point method. Write the solution in interval notation.x3 ? 64
A. [-4, 4] B. (-?, -4] ? [4, ?) C. [4, ?) D. (-?, 4]
Solve the equation.7y2 - 3y2 = 42y + 9y
A. 0, 
B. - 
, 
C. 0
D. 0, 
Write the conjugate 
of the complex number z. Then find z
.z = 
+ 7i
A. 
= 
- 7i, z
= 56
B. 
= 
- 7i, z
= 63
C. 
= 
- 7i, z
= -42
D. 
= 
- 7i, z
= 42