Solve the quadratic inequality by graphing an appropriate quadratic function.x2 + 3x ? 4
A. [-4, 1]
B. (-?, -4] ? [1, ?)
C. (-?, -4]
D. [1, ?)
Answer: B
You might also like to view...
Solve the problem.In designing a flexible tubing system, the supports for the tubing must be perpendicular to the tubing. If a section of the tubing follows the curve 
along which lines must the supports be directed if they are located at 
and 
A. y = - 
x + 
, x = 0, y = 
x + 
B. y = - 
x + 
, x = 0, y = 
x + 
C. y = - 
x + 
, x = 0, y = 
x + 
D. y = - 
x + 
, x = 0, y = 
x + 
Use the properties of logarithms to rewrite the expression. Simplify the result if possible. Assume all variables represent positive real numbers.log8 
A. (log8 4) 
- log8 8
B. log8 4 + 
log8 7 - log8 8
C. log8 4 + 
- log8 8
D. 
Find all solutions of the equation: 
a. 
b. 
c. 
d. 
Factor.x3 - 343
A. (x + 343)(x2 - 1) B. (x + 7)(x2 - 7x + 49) C. (x - 7)(x2 + 49) D. (x - 7)(x2 + 7x + 49)