Graph the level curves in the first quadrant of the xy-plane for the given function at heights of 
and 
- 
+ y = 4z
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Use the rules for exponents to rewrite the expression and then evaluate the new expression. 
A. -14 B. -5 C. 0 D. 1
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Evaluate the integral.
A. 4? B. 5? C. 9? D. 8?
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Add or subtract. Assume that variables represent nonnegative values.
- 2
- 10
A. -162
B. -74
C. 74
D. 98
Mathematics
Solve the problem.An item is originally priced to sell for $175 and is marked down 20%. The store takes off an additional 25%, and a customer has a coupon for 10%. What is the total percent reduction for this item? Give the net decimal equivalent and total percent reduction.
A. 0.46; 54% B. 0.5; 55% C. 0.54; 46% D. 0.55; 50%
Mathematics