Approximate the area of the region bounded by f(x) = 31n(5x), the x-axis, and the vertical lines x = 4 and x = 8, using four rectangles. (That is, calculate S?) Calculate the height of each rectangle using the x-value at its right edge.
A) 44.27
B) 43.38
C) 42.48
D) 41.59
D) 41.59
Mathematics
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Use the Trapezoidal Rule with n = 4 steps to estimate the integral.
A. 1
B. 
C. 4
D. 2
Mathematics
Solve the problem.How many posts does it take to support a straight fence 140 feet long if posts are placed every 10 feet?
A. 13 B. 15 C. 16 D. 14
Mathematics
Write the phrase as a mathematical expression. Use x as the variable.148 fewer than some number
A. 148x B. x + 148 C. x - 148 D. 148
Mathematics
Multiply the binomials.(6x - 6y)(4x - y)
A. 10x2 - 27xy + 6y2 B. 24x2 - 30xy + 6y C. 24x2 - 30xy + 6y2 D. 10x2 - 30xy + 6y2
Mathematics