Use your calculator to approximate the integral using the method indicated, with n = 100. Round your answer to four decimal places.
dx (trapezoidal rule)
A. 5.2377
B. 5.3497
C. 5.2877
D. 5.2290
Answer: C
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Find the vertex and y-intercept and graph the equation.y = x2 - 2x + 3
A. vertex: 
; y-intercept: 3
B. vertex: (1, -2); y-intercept: -3
C. vertex: (1, -1); y-intercept: 0
D. vertex: (1, 2); y-intercept: 3
Simplify the expression. Assume that all variables are positive when they appear.
? 
A. 
B. 
C. 5x4
D. x4
In a right triangle, find the length of the side not given. Let c represent the length of the hypotenuse. Give an answer to the nearest tenth if necessary.b = 20 cm, c = 25 cm
A. a = 5 cm B. a = 45 cm C. a = 15 cm D. a = 225 cm
Solve the inequality. Graph the solution on a number line and represent the solution in interval notation when possible.x - 12 < -3
A. x ? 9 
[9, ?)
B. x < 9
(-?, 9)
C. x > 9 
(9, ?)
D. x ? 9
(-?, 9]