Find the sum of the series, if possible.3 + 12 + 48 + 192 + 768 + . . .
A. 1,000,001,023
B. 13,023
C. Not possible
D. 1023
Answer: C
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Mark as true any statement that is always true. Mark as false any statement that is never true or that is not necessarily true. Be able to justify your answers.
1. An obtuse triangle has at least two obtuse angles. 2. All regular quadrilaterals have four lines of symmetry. 3. All regular polygons tessellate the plane. 4. The parallel sides in a trapezoid are called the legs of the trapezoid. 5. Regular polygons are polygons with all sides congruent and all angles congruent.
Multiply. Express the product in lowest terms.
? 
A. 
B. 
C. 
D. 
Solve the problem.In a Psychology class, the students were tested at the end of the course on a final exam. Then they were retested with an equivalent test at subsequent time intervals. Their average scores after t months are given in the table.
Using a graphing utility, fit a logarithmic function y = a + b ln x to the data. Using the function you found, estimate how long will it take for the test scores to fall below 84%. Express your answer to the nearest month.
A. 8 months B. 12 months C. 20 months D. 10 months
Translate the sentence into an equation.x varies inversely as y cubed.
A. x = 
B. x = ky3
C. x = 
D. x = 