Determine whether the graph of the equation is symmetric with respect to the x-axis, the y-axis, and/or the origin.y = (x + 8)(x - 7)
A. origin
B. y-axis
C. x-axis
D. x-axis, y-axis, origin
E. none
Answer: E
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Find the root. Assume that variables represent nonnegative values.
A. 3k3 B. -3k3 C. 27k3 D. 3k12
Solve the problem.Financial analysts in a company that manufactures ovens arrived at the following daily cost equation for manufacturing x ovens per day: C(x) = x2 + 4x + 1800. The average cost per unit at a production level of x ovens per day is 
(x) = C(x)/x. (i) Find the rational function 
. (ii) Sketch a graph of 
(x) for 10 ? x ? 125. (iii) For what daily production level (to the nearest integer) is the average cost per unit at a minimum, and what is the minimum
average cost per oven (to the nearest cent)? HINT: Refer to the sketch in part (ii) and evaluate 
(x) at appropriate integer values until a minimum value is found. 
A. (i) 
(x) = 
(ii) 
(iii) 44 units; $185.61 per oven
B. (i) 
(x) = 
(ii) 
(iii) 61 units; $133.29 per oven
C. (i) 
(x) = 
(ii) 
(iii) 22 units; $48.93 per oven
D. (i) 
(x) = 
(ii) 
(iii) 42 units; $88.86 per oven
Multiply and simplify.
? 
A. 1
B. 
C. -1
D. 0
Prove that the identity is true.
?
What will be an ideal response?