Simplify the expression.
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Express the relationship between a small change in x and the corresponding change in y in the form 
.y = 9
- 
A. dy = 
dx
B. dy = 
dx
C. dy = 
dx
D. dy = 
dx
Evaluate.140
A. -1 B. 0 C. 14 D. 1
Provide an appropriate response. Heights of gymnasts at a certain college are normally distributed. Which of the following are the most plausible values for the mean and standard deviation?
A. Mean = 60 in., standard deviation = -1 in. B. Mean = 61 in., standard deviation = 6.2 in. C. Mean = 60 in., standard deviation = 0.5 in. D. Mean = 61 in., standard deviation = 2.1 in.
Solve. Use interval notation to express the range.On the first four exams, your grades are 79, 98, 59, and 80. There is still a final exam, and it counts as two grades. You are hoping to earn a C in the course. This will occur if the average of your six exam grades is greater than or equal to 70 and less than 80. What range of grades on the final exam will result in earning a C?
A. [34, 84] B. [52, 82) C. [52, 82] D. [34, 84)