Graph the linear inequality.-2x - 3y ? -6
A. 
B. 
C. 
D. 
Answer: D
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Multiply the complex numbers and simplify powers of i.(6 - 9i)(2 + 4i)
A. 48 + 6i B. 48 - 6i C. -36i2 + 6i + 12 D. -24 - 42i
Find an equation of the circle with center at the origin that passes through (2, 1). ?
A. 
B. 
C. 
D. 
E. 
Determine algebraically whether the function is even, odd, or neither.f(x) = 5x3
A. even B. odd C. neither
Solve the problem.A natural gas company charges $0.05 per therm of gas used for the first 25 therms and $0.07 per therm above the 25 therms used. (a) Write a piecewise-defined function c(x) for the cost of x therms of gas used. (b) Find 
c(x), 
c(x), and 
c(x).(c) Find c(30).
A. (a) f(x) = 
,
(b) $1.25, $3.00, $1.25
(c) $3.60
B. (a) f(x) = 
,
(b) $1.25, $1.25, $1.25
(c) $3.60
C. (a) f(x) = 
,
(b) $1.25, $2.19, $1.25
(c) $3.35
D. (a) f(x) = 
,
(b) $1.25, $1.25, $1.25
(c) $1.60