Decide whether or not the arrow diagram defines a function.DomainRange 
A. No
B. Yes
Answer: A
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Answer the following statement(s) true (T) or false (F)
In order to appeal to the learning styles of all students, teachers should teach both instrumentally and relationally.
The Richter scale converts seismographic readings into numbers for measuring the magnitude of an earthquake according to this function M(x) = log 
, where x0 = 10-3.What is the magnitude of an earthquake whose seismographic reading is 7.6 millimeters at a distance of 100 kilometers from its epicenter?Round the answer to four decimal places.
A. 3.8808 B. 0.20281 C. 2.0281 D. 0.38808
Determine if the given regular figures form a vertex figure.Square, two octagons
A. Yes B. No
Find the constant of proportionality k, and write the linear function relating the two variables.Suppose that y varies directly with x. When x = 
, then y = 9.
A. k = 
; y = x + 
B. k = 
; y = 
x
C. k = 36; y = 36x
D. k = 
; y = 
x