Graph the linear inequality in two variables.x + y ? 4
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Find the db gain of an amplifier whose input voltage is 0.9 volts and whose output voltage is 27 volts. ? Please enter your answer as a number without the units, rounded to two decimal places.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Find the average rate of change of the function as x changes from a to b.f(x) = -x3; a = -1, b = 5
A. 21 B. -29 C. -21 D. 31
Mathematics
Solve the equation by factoring.2x2 - 7x - 4 = 0
A. x = 
or x = - 2
B. x = - 
or x = 2
C. x = - 
or x = 4
D. x = -2 or x = 4
Mathematics
Evaluate the expression if a = -5, b = 16, and c = 7.9ab + 8c
A. 191 B. -664 C. -141 D. -760
Mathematics