Solve the logarithmic equation.log4 (x - 3) + log4 (x - 3) = 1
A. -
, 
B. 
C. -5, 5
D. 5
Answer: D
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Decide whether the statement is true or false.If the radius of a sphere is doubled, the surface area is multiplied by a factor of 4.
A. True B. False
Find the standard-form equation of the ellipse centered at the origin and satisfying the given conditions.An ellipse with vertices (0, ±7) and foci (0, ±3)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Provide an appropriate response.One way to measure a person's cardiofitness is to calculate how many METs, or metabolic units, he or she can reach at peak exertion. One MET is the amount of energy used when sitting quietly. To calculate ideal METs, we can use the expression: 
Researchers recommend that a person reach approximately 85% of his or her MET when exercising. Calculate 85% of the ideal MET for a 65-yr-old woman. Then refer to the following table. What activity can the woman do that is approximately this value? 
A. 5.313; Ballroom or square dancing B. 6.25; Swimming C. 5.313; Walking D. 6.25; Mowing lawn
Graph the piecewise linear function.f(x) = 
A. 
B. 
C. 
D. 