Find the domain of the function.
?
f(x) = 2x2 + 4x - 5
?
A. All real numbers x such that x> 0
B. All real numbers x
C. All real numbers x such that x< 0
D. Non-negative real numbers x
E. Non-negative real numbers x except x = 0
Answer: B
You might also like to view...
Find all the first order partial derivatives for the following function.f(x, y) = xye-y
A. 
= ye-y; 
= xe-y(y - 1)
B. 
= ye-y; 
= xe-y
C. 
= ye-y; 
= xe-y(1 - y)
D. 
= ye-y; 
= - xye-y
Solve.A car travels 400 miles on level terrain in the same amount of time it travels 160 miles on mountainous terrain. If the rate of the car is 30 miles per hour less in the mountains than on level ground, find its rate in the mountains.
A. 80 mph B. 40 mph C. 50 mph D. 20 mph
Provide an appropriate response.Suppose ?PQR ? ?ABC, where ?ABC is shown below. Find PQ.
A. 5 B. Cannot be determined C. 3 D. 4
Write the decimal as a fraction. Do not write in lowest terms.6.67
A. 
B. 
C. 
D. 