For the pair of functions, find the indicated domain.f(x) = 
, g(x) = 
Find the domain of f + g.
A. (-?, -10) ? (-10, 1) ? (1, ?)
B. (-?, -4) ? (-4, -2) ? (-2, ?)
C. (-?, ?)
D. (-?, -1) ? (-1, 10) ? (10, ?)
Answer: A
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A. Square the input number: y = x2. B. Multiply the input number by 3: y = 3x. C. Double the input number: y = 2x. D. Cube the input number: y = x3.
Solve the problem.A surveyor is measuring the distance across a small lake. He has set up his transit on one side of the lake 130 feet from a piling that is directly across from a pier on the other side of the lake. From his transit, the angle between the piling and the pier is 60°. What is the distance between the piling and the pier to the nearest foot?
A. 113 feet B. 75 feet C. 225 feet D. 65 feet
Identify the radicand.
A. 
B. 
C. x + 3
D. x
Solve the problem.A chemical solution contains 5% sodium. How much sodium is in 
of solution? Round to the nearest hundredth if necessary.
A. 2.25 mL B. 0.225 mL C. 90 mL D. 9 mL