Find A-1 without a calculator.A = 
A. A-1 = 
B. A-1 = 
C. A-1 = 
Answer: C
Mathematics
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Find the exact value of the expression. Do not use a calculator.1 + sin2 85° + sin2 5°
A. 2 B. 0 C. 1 D. -1
Mathematics
Determine, without graphing, whether the given quadratic function has a maximum value or a minimum value and then find that value.f(x) = -4x2 - 8x
A. minimum; - 4 B. minimum; 4 C. maximum; - 4 D. maximum; 4
Mathematics
Solve the exponential equation. 5e4x - 3 = 20
A. 0.900 B. 5.750 C. -0.403 D. 1.097
Mathematics
Graph the function f by starting with the graph of y = x2 and using transformations (shifting, compressing, stretching, and/or reflection).f(x) = 5x2 - 10x + 8 
A. 
B. 
C. 
D. 
Mathematics