Use a finite approximation to estimate the area under the graph of the given function on the stated interval as instructed.f(x) = 1 - x2 between x = -1 and x = 1 using the "midpoint rule" with two rectangles of equal width.
A. 1.5
B. 0.75
C. 2
D. 0.5
Answer: A
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Solve the problem.Since 1960, the median age of men at their first marriage in a certain community has steadily increased. If x represents the the median age of these men at their first marriage, then x can be approximated by the formula 
+ 24.1, where t represents the number of years since 1960. What is the median age of men who are married for the first time in 2003? Round to the nearest hundredth when appropriate.
A. 24.71 years B. 1062.53 years C. 50.33 years D. 1036.91 years
Verify that the equation is an identity.cos(x - y) - cos(x + y) = 2 sin x sin y
What will be an ideal response?
Use a polar coordinate system to plot the point with the given polar coordinates.
A. 
B. 
C. 
D. 
Find an equation of variation in which y varies directly as x and the following is true.y = 0.9, when x = 0.5
A. y = 
x
B. y = 
x
C. y = 
D. y = 0.9x