Find the indicated root, or state that the expression is not a real number.
A. -1
B. 1
C. not a real number
D. - 
Answer: A
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Assume that the sequence converges and find its limit.a1 = 4, an + 1 = 
A. -4 B. 4 C. 16 D. 1
Provide an appropriate response. Using a calculator, find the value of sin 4.7. Round to four significant digits.
A. 0.9966 B. 0.08193 C. -0.01239 D. -0.9999
The pH of a solution is given by the formula 
, where 
is the concentration of hydrogen ions in moles per liter in the solution. Use this formula to solve the problem.Lower levels of pH indicate a more acidic solution. If the pH of solution A is 4.2 and the pH of solution B is 6.9, how much more acidic is solution A than solution B?
A. 0.0000630 times as acidic B. 501.2 times as acidic C. 0.00200 times as acidic D. -0.0000630 times as acidic
Write the decimal in word form.8.00861
A. eight and eight hundred sixty-one tenths B. eight and eight hundred sixty-one millionths C. eight and eight hundred sixty-one hundred-thousandths D. eight and eight hundred sixty-one thousandths