Simplify the expression: .
a. 30
b. 54
c. 26
d. 16
a. 30
Mathematics
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Plot the point.(-5, 4)
A. 
B. 
C. 
D. 
Mathematics
Find the domain of f(x).f(x) = ?28 - x?
A. ? the set of all real numbers B. {x? x is a real number and x ? -28} C. {x? x is a real number and x ? 28} D. {x? x < 28}
Mathematics
Determine the order of the matrix.
A. 2 × 4 B. 8 C. 2 D. 4 × 2
Mathematics
?Area. The radius, r, of a circle is decreasing at a rate of 4 centimeters per minute.Find the rate of change of area, A, when the radius is 6. ?
A. ?
B. ?
C. ?
D. ?
E. ?
Mathematics