Find the domain of the composite function f?g. Write the domain in interval notation.f(x) = 
; g(x) = 3x + 6
A. (-?, ?)
B. [0, ?)
C. (-?, -2] ? [0, ?)
D. [-2, ?)
Answer: D
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Interpret the slope of the following scenario: Temperature increases linearly. The following are two temperature readings: 7 am: 47?, 9 am: 55?. ?
A. ?Slope: 8? per hour B. ?Slope: Increase of 4? per hour C. ?Slope: Increase of 8? D. ?Slope: Increase of 8? per hour E. ?None of the above
Provide an appropriate response.A student argued that it is impossible to use the substitution method to determine if a system of equations has no solution or an infinite number of solutions. Is the student correct?
Fill in the blank(s) with the appropriate word(s).
Find the solution set of the equation. If the equation has no solution write ? and if the equation is an identity so state.
+ 
= 
- 
A. 
B. ?
C. {44}
D. 
Suppose A = 
. Find A2.
A. A2 =
B. A2 =
C. A2 = 
D. A2 = 