Solve the problem.The time T necessary to make an enlargement of a photo negative varies directly as the area A of the enlargement. If 24 seconds are required to make a 3-by-4 enlargement, find the time required for a 
enlargement.
A. 90 sec
B. 30 sec
C. 60 sec
D. 120 sec
Answer: C
Mathematics
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Evaluate the expression.9 + (-13)
A. 4 B. -4 C. -22 D. 22
Mathematics
Simplify.(-r4s)2( -r2s2)5
A. -r48s34 B. r18s12 C. -r-2s12 D. -r18s12
Mathematics
Construct a probability model for the experiment.Rolling a 6-sided fair die once
What will be an ideal response?
Mathematics
Factor completely.128k3m - 250m4
A. 2m(64k - 5m)(k2 + 20km + 25m2) B. 2m(4k - 5m)(16k2 + 20km + 25m2) C. 2m(4k + 5m2)(16k2 - 20km + 25km2) D. (8km - 10m2)(16k2 + 25m2)
Mathematics