Evaluate the expression without the use of a calculator, and then verify your answer using a calculator.ln 
A. 
B. 
C. 4e
D. 4
Answer: B
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Determine where the given function is concave up and where it is concave down. f(x) = x3 + 3x2 - x - 24
A. Concave down on (-?, -1) and (1, ?), concave up on (-1, 1) B. Concave up on (-?, -1), concave down on (-1, ?) C. Concave down for all x D. Concave up on (-1, ?), concave down on (-?, -1)
Use the information in the table to solve the problem. Write your answer as a fraction in lowest terms.The table below shows the amounts of pollutants (in parts per million) in a sample of rainwater.
Find the ratio of pollutant A to pollutant B.
A. 
B. 
C. 
D. 
Solve the following problem involving a quadratic equation. Round to the nearest tenth if necessary.The diagonal of a television screen measures 15 inches. Assuming that the width of the screen is 3 inches longer than the height, find the dimensions of the screen. Hint: Use the Pythagorean Theorem.
A. The height measures 12 inches and the width measures 18 inches. B. The height measures 36 inches and the width measures 39 inches. C. The height measures 9 inches and the width measures 12 inches. D. The height measures 6 inches and the width measures 9 inches.
Factor when possible.-27a3 + 15a
A. -3a(9a2 - 5) B. -3(9a3 + 5a) C. -3a(9a2 + 5) D. -3a2(9a - 5)