Solve the equation.
- 
= 
A. z = -4
B. ?
C. z = 5
D. z = 4
Answer: B
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Multiply or divide (as specified) the numerator and denominator by the given factor to obtain an equivalent fraction.
(divide by x + 1)
A. 
B. 
C. 
D. 
Determine if the sequence is arithmetic. If the sequence is arithmetic, find the common difference.a1 = -8, an = an - 1 + 2
A. no B. yes, -8 C. yes, 1 D. yes, 2
Solve the problem.In the formula A = Iekt, A is the amount of radioactive material remaining from an initial amount I at a given time t and k is a negative constant determined by the nature of the material. A certain radioactive isotope has a half-life of approximately 850 years. How many years would be required for a given amount of this isotope to decay to 65% of that amount?
A. 297.5 yr B. 1287 yr C. 463 yr D. 528 yr
Divide.
Answer the following statement true (T) or false (F)