Solve the absolute value equation.
= 
A. x = - 
B. x = - 1, 
C. no solution
D. x = - 
, - 
Answer: D
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For the given geometric sequence, find the limit of the infinite series, if it exists. -10, -5, - 
, - 
, . . .
A. - 20
B. -10
C. 10
D. - 
Solve the equation for solutions in the interval [0°, 360°).sin 2? + cos 2? = 1
A. ? = 0°, 90°, 180°, 270° B. ? = 0° C. ? = 0°, 45°, 180°, 225° D. ? = 33°, 57°, 123°, 147°, 213°, 237°, 303°
Solve the problem. Suppose a student plans to drive from his home to New Haven 75 miles on a divided highway and 30 miles on an undivided highway. The speed limit is 70 mph on the divided highway and 50 mph on the undivided highway. Assume the driver drives nonstop. Let T(a) represent the driving time (in hours) if the student drives at a mph above the speed limits. By finding a formula for T(a), determine 
. What does your result mean in terms of the trip?
A. T(0) - T(10) = 0.23; the trip will take 0.23 hours more by driving at 10 mph over the speed limits than it would take driving at the speed limits. B. T(0) - T(10) = 0.37; the trip will take 0.37 hours less by driving at 10 mph over the speed limits than it would take driving at the speed limits. C. T(0) - T(10) = 0.37; the trip will take 0.37 hours more by driving at 10 mph over the speed limits than it would take driving at the speed limits. D. T(0) - T(10) = 0.23; the trip will take 0.23 hours less by driving at 10 mph over the speed limits than it would take driving at the speed limits.
Simplify.-20 - 0 - (-18) - 10 + 4
A. -24 B. -32 C. 12 D. -8