Rewrite using a positive exponent. Evaluate, if possible.(-5)-4
A. - 
B. 625
C. 
D. -625
Answer: C
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Write the expression as the sine, cosine, or tangent of a double angle. Then find the exact value of the expression.cos2 60° - sin2 60°
A. - 
B. 
C. 
D. - 
Find the requested function.Find the cubic function with the given table of values.
A. f(x) = -3(x - 7)(x - 6)(x + 1) B. f(x) = (x + 7)(x + 6)(x - 1) C. f(x) = -3(x + 7)(x - 6)(x - 1) D. f(x) = -3(x + 7)(x + 6)(x - 1)
Let Q represents a mass of radioactive radium 
(in grams), whose half-life is 1,599 years. The quantity of radium present after t years is 
. Determine the quantity present after 500 years. Round to the nearest hundredth of a gram, if necessary.
a. 0 g b. 0.31 g c. 0.81 g d. 1.61 g e. 2 g
Evaluate using the order of operations.- 
÷ 
+ 
(-2)(-3)
A. - 
B. 
C. - 
D. 