Solve the problem. Use a calculator with an LN or a LOG key.In chemistry, the pH of a substance is defined by 
where 
is the hydrogen ion concentration in moles per liter. Find the 
of a sample of lake water whose 
is 3.05 × 10-9 moles per liter. (Round to the nearest tenth.)
A. 7.3
B. 6.4
C. 10.1
D. 8.5
Answer: D
Mathematics
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Graph the basic function using a solid line and the transformed function using a dotted line.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.In a state with a population of 7,000,000 the average citizen spends $6,000 on housing each year. What is the total spent on housing for the state? Express answer in scientific notation.
A. $4.2 × 109 B. $42 × 1011 C. $42 × 1010 D. $4.2 × 1010
Mathematics
Round the decimal to the indicated place value.53.123437
ten-thousandth
A. 53.1234 B. 53.123437 C. 53.12344 D. 53.1235
Mathematics
Factor completely. If the polynomial cannot be factored, say it is prime.1000x4 - x
A. x(10x - 1)(100x2 + 1) B. x(1000x - 1)(x2 + 10x + 1) C. x(10x + 1)(100x2 - 10x + 1) D. x(10x - 1)(100x2 + 10x + 1)
Mathematics