Find all numbers for which the rational expression is not defined.
A. x = 8 and x = -8
B. x = 0
C. x = 4 and x = -8
D. x = -4 and x = 8
Answer: C
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Find the derivative of y with respect to x, t, or ?, as appropriate.y = 
A. 
B. 
C. 
D. 
Solve the equation for the indicated variable.P = 2L + 2W, for L
A. L = P - 2W
B. L = 
C. L = P - W
D. L = 
Aberwald Corporation expects to sell 120,000 memory chips this year. Aberwald has determined that it costs $3 to carry each chip in inventory and $50 each time an order for raw materials is placed. Assuming Aberwald always orders the EOQ amount, what will be its total ordering cost this year?
A. $7,2000 B. $260,000 C. $3,000 D. $800 E. $6,000
Suppose that an automobile manufacturer has accepted orders for 30 minivans, 25 sport utility vehicles, and 15 sedans. These orders can be represented by the row vector Q = [ 30 25 15 ].The "raw materials" that go into each type of vehicle are steel, glass, plastic, paint, and labor. The entries in matrix R below give the number of units of each raw material (in this order) which are needed for each type of vehicle. R = 
. Suppose that steel costs $800 per unit, glass costs $400 per unit, plastic costs $300 per unit, paint costs $200 per unit, and labor costs $1000 per
unit. This data can be written as the column cost vector C = 
. The price the manufacturer negotiated for each minivan is $16,000, for each SUV is $21,000, and for each sedan is $13,000. This information can be written as the column price vector P = 
.Find the amount of each raw material the manufacturer will need to fill the orders.
What will be an ideal response?