Give the center and radius of the circle. Then sketch its graph.(x - 
)2 + (y + 4)2 = 9
A. center (- 
, 4), r = 3
B. center (
, 4), r = 3
C. center (- 
, -4), r = 3
D. center (
, -4), r = 3
Answer: D
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Solve.The time T necessary to make an enlargement of a photo negative varies directly as the area A of the enlargement. If 75 seconds are required to make a 5-by-5 enlargement, find the time required for a 7-by-7 enlargement.
A. 147 sec B. 245 sec C. 196 sec D. 98 sec
Factor completely. If the polynomial is prime, state this.9x2y2 + 12xyz + 4z2
A. (3xy + 2z)2 B. Prime C. (3xy - 2z)2 D. (3xy + 2z)(3xy - 2z)
Provide an appropriate response.Explain why P(n, a) > 
, with n and a being positive integers such that n > a.
What will be an ideal response?
Find the median for the given sample data.2, 13, 14, 21, 30, 30, 49Find the median for the data.
A. 30 B. 14 C. 21 D. 25.5