A border of uniform width is printed on a page measuring 18 in. by 11 in. (See the figure below.) The area of the border is 28 in.2. Find the width of the border.
A. 1 in.
B. 
in.
C. 
in.
D. 
in.
E. 
in.
Answer: C
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Use a finite approximation to estimate the area under the graph of the given function on the stated interval as instructed.f(x) = x2 between x = 3 and x = 7 using the midpoint sum with four rectangles of equal width.
A. 126 B. 117 C. 105 D. 86
Find the product.(3x + 12)(3x - 12)
A. 3x2 - 72x - 144 B. 9x2 - 144 C. 9x2 - 72x - 144 D. 9x2 + 72x - 144
Use Euler's method to approximate the solution. Also find the exact solution. Round your answers to four decimal places.Use Euler's method with ?x = 0.2 to approximate y(1) given that 
and y(0) = 
. Also find the exact value of y(1). 
A. y(1) ? 1.8562; the exact solution is y(1) = 1.6310 B. y(1) ? 1.0368; the exact solution is y(1) = 1.3591 C. y(1) ? 1.0728; the exact solution is y(1) = 1.0873 D. y(1) ? 1.2442; the exact solution is y(1) = 1.3591
The function f is one-to-one. Find its inverse.f(x) = (x + 2)3 - 8.
A. f-1(x) = 
- 2
B. f-1(x) = 
C. f-1(x) = 
+ 8
D. f-1(x) = 