Solve the problem.If x is the hydrogen ion concentration of a sample of water, then the pH of that water sample is 
If the pH of the water from one lake is 5.2 and the pH of the water from a second lake is 6.6, how many times greater is the hydrogen ion concentration of the second lake than the hydrogen ion concentration of the first lake? Round your answer to the nearest hundredth.
A. 18.59
B. 25.12
C. 6.14
D. 0.04
Answer: D
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Find the equation of the parabola determined by the given information.Vertex at the origin, focus at (0, 
)
A. y = 
x2
B. x = 
y2
C. y = 
x2
D. y = 28x2
Solve the problem.The odds against Chip beating his friend in a round of golf are 1 : 6. Find the probability that Chip will beat his friend.
A. 
B. 
C. 
D. 
Solve the problem.The value of a retirement savings account with a monthly contribution of $150 (contributions made at the end of each month, including the last month), and an APR of 6.0% (compounded monthly) after 40 years is $298,723.61. Find the value of this retirement savings account after 45 years. Round your answer to the nearest cent.
A. $426,593.02 B. $382,938.32 C. $400,326.64 D. $400,660.01 E. $413,398.89
Solve the problem.The following list of digits was taken from a table of random numbers. We will let them represent 50 tosses of 5 fair coins. If a digit is 0 - 4, it will be an H, and the digit 5 - 9 will be a T. Use this simulation to estimate the probability of getting two heads on a toss of five coins.1872894741320630496354859155927135728152117321717389555755200888295295728953889458070773711019494917643369510390740035776259952052240040384511507452332751033761865636172939087480615941279969113392706727324727232240686253264092997095877709759912916866
A. 
B. 
C. 
D. 