Evaluate f(x) at the given value of x.f(x) = x2 + 3; x = 9
A. 86
B. 81
C. 80
D. 84
Answer: D
Mathematics
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Decide whether or not the given equation is an identity.
= cot y(1 - sin y)
A. Yes B. No
Mathematics
Use the fundamental identities to simplify the expression.sin2? + tan2? + cos2?
A. tan2? B. sin ? C. sec2? D. cos3?
Mathematics
Use the Factor Theorem to determine whether x - c is a factor of f(x).f(x) = x4 - 45x2 - 196; x - 14
A. Yes B. No
Mathematics
Solve the problem.To convert a temperature from degrees Celsius to degrees Fahrenheit, you multiply the temperature in degrees Celsius by 1.8 and then add 32 to the result. Find a linear equation to convert from degrees Celsius to degrees Fahrenheit.
A. F = 
B. F = 1.8c + 32
C. F = 1.8 + 32c
D. F = 33.8c
Mathematics