Answer the question.Choose the expression that is equivalent to the following: (9x + 5y)(7y + 9x)
A. (9x + 5y)(9y + 7x)
B. 18x + 12y
C. (9x + 9y)(5x + 7y)
D. (9x + 5y)(9x + 7y)
Answer: D
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Approximate the area under the curve and above the x-axis using n rectangles. Let the height of each rectangle be given by the value of the function at the right side of the rectangle.y = x2 from x = 0 to x = 4; n = 4
A. 27 B. 33 C. 36 D. 30
Provide an appropriate response.Determine the y-intercept of the equation: 2y = 4x - 6
A. -3 B. -6 C. -4 D. 2
List the critical values of the related function. Then solve the inequality.
> 
A. No critical values; ?
B. -
, 
; (-?, -
) ? (
, ?)
C. 6, 7; (-?, 6) ? (7, ?)
D. No critical values; (-?, ?)
Use Cramer's rule to solve the system. If D = 0, use another method to complete the solution.-5x + 3z = -21 4x + 7y - 6z = 51 2x - 5y = -27
A. {(9, -9, -8)} B. {(9, 9, 8)} C. {(9, 8, 9)} D. ({10, 7, 8)}