For the functions f(x) and g(x), determine the domain of (f ? g)(x) (the product of f and g).f(x) = 
, g(x) = 10x2 - 5
A. {x ? x is a real number}
B. {x ? x is a real number and x ? 0}
C. {x ? x is a real number and x ? 5}
D. {x ? x is a real number and x ? -10}
Answer: B
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Solve.Approximately 4 × 103 employees of a certain company average $30,000 each year in salary. What is the total amount earned by all the employees of this company per year? Write your answer in scientific notation.
A. $12 × 109 B. $12 × 108 C. $1.2 × 109 D. $1.2 × 108
Predict the number of tick marks on the positive x - axis and the positive y-axis.[-350, 360, 5] by [-450, 450, 5]
A. 90; 70 B. 70; 90 C. 90; 72 D. 72; 90
Provide an appropriate response.Is it true that the product of two binomials (-9x + 5)(-9x + 5) is equal to 
A. True B. False
Solve the problem.An object is propelled vertically upward from the top of a 16-foot building. The quadratic function 
models the ball's height above the ground, 
in feet, t seconds after it was thrown. How many seconds does it take until the object finally hits the ground? Round to the nearest tenth of a second if necessary.
A. 5.5 seconds B. 0.1 seconds C. 2 seconds D. 11.1 seconds