Solve the inequality.x2 + 2x ? 0
A. (-?, 0] or [2, ?)
B. (-?, -2] or [0, ?)
C. [0, 2]
D. [-2, 0]
Answer: D
You might also like to view...
Using complements (with respect to 1) of the single discounts, find the net cost equivalent for the following discount.25/25/25/5
A. 0.4 B. 0.6 C. 0.40078125 D. 0.59921875
Solve the problem.An object has a frequency of 5 vibrations per second. Write an equation in the form d = sin ?t for the object's simple harmonic motion.
A. d = sin 10t
B. d = sin 
?t
C. d = sin 10?t
D. d = sin 
t
Solve.A standard train ticket in a certain city costs 
per ride. People who use the train also have the option of purchasing a frequent-rider pass for 
each month. With the pass, a ticket costs only
per ride. How many train rides in a month make the frequent-rider pass a better deal than standard train tickets?
A. 20 or more rides B. 21 or more rides C. 19 or more rides D. 22 or more rides
Determine whether the graph of the function is the graph of a one-to-one function.
A. Yes B. No