Simplify the exponential expression.(-6x4y5)2
A. -36x8y10
B. 36x8y10
C. -6x8y10
D. 36x6y7
Answer: B
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What term of the arithmetic sequence is the given number?6, 5.2, 4.4, . . . ;-13.2
A. 24 B. 28 C. 26 D. 25
Multiply.
A. - 
B. 14
C. 147
D. - 
Solve the problem.In the formula A(t) = A0ekt, A is the amount of radioactive material remaining from an initial amount A0 at a given time t, and k is a negative constant determined by the nature of the material. An artifact is discovered at a certain site. If it has 59% of the carbon-14 it originally contained, what is the approximate age of the artifact? Carbon-14 decays at the rate of 0.0125% annually. Round to the nearest year, if necessary.
A. 4720 years B. 1833 years C. 3280 years D. 4221 years
Write the phrase as a variable expression. Use x to represent "a number."5 times a number
A. 5 + x
B. 5x
C. 
D. 5 - x