Find the center (h, k) and radius r of the circle. Graph the circle.x2 + y2 + 2x + 12y + 33 = 0
A. (h, k) = (1, 6); r = 2
B. (h, k) = (-1, -6); r = 2
C. (h, k) = (-1, 6); r = 2
D. (h, k) = (1, -6); r = 2
Answer: B
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There are initially 5.00 inches of snow on the ground. It begins snowing, and snow falls at a steady rate of 4.00 inches per hour.
?
?
A: Explain why the depth 
, in inches, of snow on the ground is a linear function of the number of hours 
since the snowfall began.
?
B: Find a formula that gives the depth of snow on the ground after 
hours of snowfall.
?
C: Solve the equation you found in part 
for 
and explain in practical terms what this equation tells you.
What will be an ideal response?
Evaluate.4 + 9(-6)
A. 50 B. -78 C. 78 D. -50
A point on the terminal side of angle ? is given. Find the exact value of the indicated trigonometric function of ?.(21, 28) Find cos ?.
A. 
B. 
C. 
D. 
Provide an appropriate response.Find all complex fourth roots of z = -16. Write each root in rectangular form.
A. 2 + i, 2 - i, -2 + i, -2 - i
B. 1 + i, 1 - i, -1 + i, -1 - i
C. 8
+ 8
i, 8
- 8
i, -8
+ 8
i, -8
- 8
i
D. 
+ 
i, 
- 
i, - 
+ 
i, - 
- 
i