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
Answer: A
Mathematics
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A. 
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A. 7
B. 1
C. -7
D. 
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Graph the line.y = - 
x + 2
A. 
B. 
C. 
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Determine a window which gives a complete graph of the polynomial function.f(x) = 2x4 + 2x3 - 4x2 - 3x - 6
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Mathematics