Perform the indicated operation(s). Simplify if possible.
- 
A. 
B. 
C. 
D. 
Answer: A
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Suppose 
is a linear function of 
. The slope is 2.39. A decrease of 7 units in 
causes what change
in 
?
?
A. A decrease of 16.73 units
B. An increase of 16.73 units
C. An increase of 2.9288702929 units
D. A decrease of 2.9288702929 units
Solve the problem. Round approximations to the nearest cent.Frank's Furniture employees earned $269.97, $347.46, $432.82, $303.60, $150.34, and $192.57 for last week. Find the mean wage.
A. $282.79 B. $327.35 C. $339.35 D. $424.19
Find zw or 
as specified. Leave your answer in polar form.z = 5(cos 35° + i sin 35°)w = 2(cos 40° + i sin 40°)Find zw.
A. 10(cos 75° + i sin 75°) B. 10(cos 50.9° + i sin 50.9°) C. 7(cos 50.9° + i sin 50.9°) D. 7(cos 75° + i sin 75°)
Solve the problem.The radiator in a certain make of car needs to contain 
of 40% antifreeze. The radiator now contains 
of 20% antifreeze. How many liters of this solution must be drained and replaced with 100% antifreeze to get the desired strength?
A. 15.0 L B. 24 L C. 20.0 L D. 30 L