Find a simplified difference quotient for the function.f(x) = x3 + x
A. 3x2 + 3xh + h2 + 1
B. 3x2 + 3xh + h2 + h
C. 2x3 + 3x2 + 3xh + h2
D. 2x3 + 3x2 + 3xh + h2 + 1
Answer: A
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An endangered population is declining by 7% per year. There are initially 824 animals present. ? A: Write a formula that gives the number A of animals remaining after t years. ? B: What is the percentage decrease over any 6-year period? ? C: Make a graph that shows the population level over the first 20 years. ? D: How long will it take for the population to decline by 21%? ? Round your answers to two decimal places if necessary. ?
What will be an ideal response?
Evaluate the expression.Let x = -19, y = -18. Evaluate |21x|.
A. 342 B. -342 C. 399 D. -399
For the function f, use composition of functions to show that f-1 is as given.
, 
What will be an ideal response?
Find the eccentricity of the ellipse or hyperbola.4x2 + y2 = 36
A. 
B. 
C. 
D. 