Use the pH scale to answer the question.If the pH of a solution decreases by 1.7, how much does the hydrogen ion concentration change? Does the change make the solution more acidic or more basic?
A. Increases by a factor of 17; more acidic
B. Decreases by a factor of 50; more basic
C. Decreases by a factor of 17; more basic
D. Increases by a factor of 50; more acidic
Answer: D
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Solve the problem.Find out how long it takes a $3200 investment to double if it is invested at 
compounded quarterly. Round to the nearest tenth of a year. Use the formula 
.
A. 9.2 yr B. 8.8 yr C. 9 yr D. 8.6 yr
Use DeMoivre's Theorem to find the indicated power of the complex number. Write the answer in rectangular form.
5
A. -128 + 128i
B. - 
+ 
i
C. -64 + 64i
D. -64
+ 64
i
Factor the polynomial completely, given that the binomial is a factor.x - 1, x3 + 17x2 + 63x - 81
A. (x - 1)(x + 9)(x + 9) B. (x + 1)(x - 9)(x - 9) C. (x - 1)(x2 - 18x + 81) D. (x - 1)(x2 + 81)
Solve the problem.In survey of 50 households, 25 responded that they have an HDTV television, 35 responded that they had a multimedia personal computer and 15 responded they had both. How many households had neither an HDTV television nor a multimedia personal computer?
A. 35 B. 15 C. 25 D. 5