Express the sum using summation notation. Use a lower limit of summation, not necessarily 1, and k for the index of summation.7 + 9 + 11 + 13 + . . . + 23
A. 
B. 
C. 
D. 
Answer: B
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A cup of coffee is poured from a pot that maintains a constant temperature. The fresh coffee is placed on the counter to cool. Its temperature, in degrees Fahrenheit, t minutes after it is placed on the counter is given by
?
?
A. What is the temperature of the coffee in the pot?B. Use functional notation to express the temperature of the coffee after 5.00 minutes.C. Calculate the value you found in part B.
What will be an ideal response?
Find the derivative.y = 
+ 
A. - 
- 
B. 
+ 
C. - 
- 
D. - 
+ 
Solve the problems.On a biology test, a student got 25 questions correct but did not pass. On a second attempt, the student got 37 questions correct. What was the percent of increase?
A. 32.4% B. 12% C. 48% D. 52%
Subtract. 9.5 - 4.675
A. 4.825 B. 4.975 C. 6.000 D. 5.825