Graph using a graphing calculator.r(x) = 
A. 
B. 
C. 
D. 
Answer: D
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Provide an appropriate response.The price of an item is reduced by 20% in a sale. Two weeks later the price is increased to 20% more than the sale price. Do you think that the item has been restored to its original price? If not, do you think its price is now higher or lower than the original price? Explain your thinking.
What will be an ideal response?
Find all fixed points for the function by setting the function equal to x and solving the resulting equation for x.f(x) = x2 + 5x - 21
A. -7, -3 B. 3, 7 C. -3, 7 D. -7, 3
The function s = f(t) gives the position of a body moving on a coordinate line, with s in meters and t in seconds.s = 7t - t2, 0 ? t ? 7Find the body's speed and acceleration at the end of the time interval.
A. 21 m/sec, -14 m/sec2 B. 7 m/sec, - 2 m/sec2 C. 7 m/sec, -14 m/sec2 D. -7 m/sec, - 2 m/sec2
Perform the indicated operation. Write the answer in simplest form. If the answer is an improper fraction, write it as a mixed number.6
÷ 
A. - 3
B. 3
C. 2
D. - 2