Determine whether the relation represents a function. If it is a function, state the domain and range.
A. function
domain: {Alice, Brad, Carl}
range: {cat, dog}
B. function
domain: {cat, dog}
range: {Alice, Brad, Carl}
C. not a function
Answer: A
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Multiply and simplify.
? 
A. -1
B. 
C. 
D. 
Find the volume of the solid generated by revolving the region about the y-axis.The region in the first quadrant bounded on the left by y = x3, on the right by the line 
, and below by the x-axis
A. 4?
B. 
?
C. 
?
D. 
?
Divide.7.4925 ÷ 4.05
A. 0.54054054 B. 18.5 C. 0.05405405 D. 1.85
Solve the problem.Suppose that certain bacteria can double their size and divide every 30 minutes. Write a recursive sequence that describes this growth where each value of n represents a 30-minute interval. Let a1 = 420 represent the initial number of bacteria present.
A. a1 = 420; an = 
an-1 for n > 1.
B. a1 = 420; an = 2 an-1 for n > 1.
C. a1 = 420; an = 2 an+1 for n > 1.
D. an = 2 a1 for all values of n.