Simplify the expression without a calculator.
A) 13
B) 14
C) 15
D) 10
E) 9
A) 13
Mathematics
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Find the derivative of the function by first expanding or simplifying the expression. f(x) = (2x - 5)(4x + 1)
A. f'(x) = 16x - 9 B. f'(x) = 16x - 22 C. f'(x) = 8x - 18 D. f'(x) = 16x - 18
Mathematics
Use the accompanying table to find the solutions to the given equation on 
tan ? - tan2 ? = 0
Y1 = tan(X)-(tan(X))2
A. None B. 135°, 315° C. 0°, 45°, 180°, 225° D. 90°, 270°
Mathematics
Find the unknown number in the proportion. Write your answer as a whole number or a mixed number if possible.
= 
A. x = 7 B. x = 81 C. x = 1 D. x = 49
Mathematics
Graph the function.f(x) = 2ex
A. 
B. 
C. 
D. 
Mathematics