Add or subtract. Express the answer as a mixed number.16
- 
A. 15
B. 14
C. 15
D. 16
Answer: C
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Express the area of the region bounded by the given line(s) and/or curve(s) as an iterated double integral.The curve 
and the lines 
and 
A. 
B. 
C. 
D. 
Use a calculator to find the acute angle between the planes to the nearest thousandth of a radian.2x - 4y + 6z = -7 and -6x - 3y + 4z = -3
A. 0.608 rad B. 1.502 rad C. 0.423 rad D. 1.148 rad
Solve the absolute value inequality. Write the solution set using interval notation.
? 2
A. 
? 
B. 
C. ?
D. 
? 
Solve.Regrind, Inc. regrinds used typewriter platens. The variable cost per platen is $1.70. The total cost to regrind 100 platens is $400. Find the linear cost function to regrind platens. If reground platens sell for $10.90 each, how many must be reground and sold to break even?
A. C(x) = 1.70x + 230; 19 platens B. C(x) = 1.70x + 400; 44 platens C. C(x) = 1.70x + 230; 25 platens D. C(x) = 1.70x + 400; 32 platens