Solve.The time T necessary to make an enlargement of a photo negative varies directly as the area A of the enlargement. If 175 seconds are required to make a 
enlargement, find the time required for a 
enlargement.
A. 378 s
B. 432 s
C. 486 s
D. 324 s
Answer: A
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Solve the problem.The sum of the squares of the digits of a positive two-digit number is 85, and the tens digit is 1 less than the units digit. Find the number.
A. 56 B. 65 C. 67 D. 76
Find the volume of the figure.Use 3.14 for ?. Round your answer to the nearest whole number.
height = 66 mradius = 21 m
A. 1451 m3 B. 95,745 m3 C. 30,464 m3 D. 91,393 m3
Solve the problem.Suppose f(x) = 30.2 + 1.3 log (x + 1) models salinity of ocean water to depths of 
at a certain latitude. x is the depth in meters and f(x) is in grams of salt per kilogram of seawater. Approximate the salinity (to the nearest hundredth) when the depth is 609 meters.
A. 82.82 B. -26.58 C. 33.82 D. 85.42
Answer the question.The binomial 64x2 + 256 is the sum of two squares that can be factored. Why is this possible?
What will be an ideal response?