Determine whether the functions f and g are inverses of each other.f(x) = 4x + 5; g(x) = 
A. Yes
B. No
Answer: A
Mathematics
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Assume the pentagon in the star is regular. The measure of ?A is?
(a) 36°
(b) 54°
(c) 72°
(d) 108°
(e) 144°
Mathematics
Use a cubic or quartic regression (as specified) to fit a curve through the points given in the table. Round to the nearest hundredth.
(Cubic)
A. y ? -1.53x3 + 0.24x2 - 2.07x + 0.36 B. y ? -1.53x3 + 0.54x2 - 2.07x + 0.36 C. y ? -1.53x3 + 0.24x2 - 2.57x + 0.36 D. y ? -1.83x3 + 0.24x2 - 2.07x + 0.36
Mathematics
Divide.(2m2 + 5m - 25) ÷ (m + 5)
A. 2m - 5 + 
B. 2m + 5
C. 2m - 5
D. m - 5
Mathematics
Decide whether the matrices are inverses of each other. (Check to see if their product is the identity matrix I.)
and 
A. Yes B. No
Mathematics