Write a true sentence using either < or >.-68 
-80
A. -68 > -80
B. -68 < -80
Answer: A
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Determine whether the first literal expression is equal to the second literal expression.a + b, b - (-a)
A. Yes B. No
Find the cardinal number for the set.B = {x|x ? N and 1 ? x < 9}
A. 8 B. 10 C. 7 D. 9
Identify the problem with the method used to obtain a random sample.April Summer is the cable TV coordinator for her town. She is planning to research the opinions of adults in the town regarding a proposed change in regulation of cable TV companies. She obtains a sample of 60 adults by choosing every 1000th name from the telephone directory.
A. Not all names listed in the telephone directory have an equal chance of being selected. April should use a random number generator to choose the names from the phone book instead of choosing every 1000th name. B. The sample is biased as only those adults with a phone whose number is listed in the directory have a chance of being selected. C. The sample is biased as April is not objective. Someone other than April should obtain the sample.
Identify and graph the polar equation.r = 4 - 3 cos ? 
A. 
limacon with inner loop
B. 
limacon without inner loop
C. 
limacon with inner loop
D. 
limacon without inner loop