Question 59 Answer and Explanation _ACT April 2011 Form 67F Math Section

Question 59 Answer and Explanation _ACT April 2011 Form 67F Math Section

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59. Water is considered contaminated when the level of zinc in the water reaches 5 parts of zinc per 1 million parts of water. What is this level of zinc contamination written in scientific notation?

A. 5.0 x 10^-9

B. 5.0 x 10^-7

C. 5.0 x 10^-6

D. 5.0 x 10⁶

E. 5.0 x 10⁹

Answer and Explanation

Your Answer is

Correct Answer is C

Explanation