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 30 seconds are required to make a 3-by-5 enlargement, find the time required for a 4-by-10 enlargement.
A. 40 sec
B. 160 sec
C. 80 sec
D. 120 sec
Answer: C
Mathematics
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Translate to a proportion.145% of what number is 43?
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Mathematics
Factor the expression completely, if possible.64x3 + 27
A. (4x + 3)(16x2 - 12x + 9) B. (64x + 3)(x2 - 12x + 9) C. (4x + 3)(16x2 + 9) D. (4x - 3)(16x2 + 12x + 9)
Mathematics
Rewrite the given expression as a single logarithm. Assume that all variables are defined in such a way that variable expressions are positive and bases are positive numbers not equal to 1.log310 - log3y
A. log6
B. log3
C. log3(10 - y)
D. log3
Mathematics
Graph the inequality.-2 < x < 2
A. 
B. 
C. 
D. 
Mathematics