Write the following as a rate in lowest terms.15 tests for 75 students
A. 
B. 
C. 
D. 
Answer: C
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Provide an appropriate response.Suppose the velocity of a body moving along the s-axis is 
= 9.8t - 7.Is it necessary to know the initial position of the body to find the body's displacement over some time interval? Justify your answer.
A. No, the initial position is necessary to find the curve s= f(t) but not necessary to find the displacement. The initial position determines the integration constant. When finding the displacement the integration constant is subtracted out. B. Yes, integration is not possible without knowing the initial position. C. Yes, knowing the initial position is the only way to find the exact positions at the beginning and end of the time interval. Those positions are needed to find the displacement. D. No, displacement has nothing to do with the position of the body.
Solve the problem.The equation 
represents the total daily profit of 
TV sales. The variable y represents the total profit, in tens of dollars, of selling x 
TVs. How many 
TVs must be sold to achieve maximum daily profit? What is the maximum profit?
What will be an ideal response?
Find the sum of the series.
A. 
B. 
C. 
D. 
Convert the radian measure to degree measure. Use the value of ? found on a calculator and round answers to two decimal places.
A. 144° B. 450° C. 72?° D. 900°