For the given functions f and g, find the requested function and state its domain. Write the domain in interval notation.f(x) = 16 - x2; g(x) = 4 - x;
Find f + g.
A. (f + g)(x) = -x2 - x + 20; (-?, ?)
B. (f + g)(x) = 4 + x; (-?, -4) ? (-4, ?)
C. (f + g)(x) = x3 - 4x2 - 16x + 64; (-?, ?)
D. (f + g)(x) = -x2 + x + 12; (-?, ?)
Answer: A
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new, changes as it ages. Find the percent decrease in value as the car ages from 2 years old to 3 years old. Round to the nearest percent.
A. 12% B. 11% C. 0.1100% D. 0.1200%
Solve.The adult daily dosage for a certain medicine is 125 mg (milligrams) for every 20 pounds of body weight. If the patient weighs 240 pounds and he is to receive a dose of this medicine every 6 hours, find the amount of medicine he should receive in each dose.
A. 375 mg B. 9000 mg C. 6000 mg D. 250 mg
Find the exact value of the expression.csc 
A. 
+ 
B. 
- 
C. 
- 
D. 
Simplify by first converting to rational exponents. Assume that all variables represent positive real numbers.
A. 
B. z16
C. 2z
D. z4