Rationalize the denominator. Assume that all variables represent positive numbers.
A. 
B. 
C. 
D. 
Answer: D
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Sketch the surface z = f(x,y).f(x, y) = 3 - x2
A. 
B. 
C. 
D. 
Solve the problem.For the month ending June 30, TriCounty Nursery has net sales of 
, cost of goods sold of 
and operating expenses of 
Find the gross profit and net income.
A. gross profit: $49,900; net income: $50,000 B. gross profit: $59,000; net income: $100,000 C. gross profit: $100,000; net income: $50,000 D. gross profit: $100,000; net income: $59,000
Refer to the following recipe to first estimate the answer and then use multiplication or division to find the exact answer. Simplify. Old Grandma's Fork Cookies 1
cups brown sugar 1
cups white sugar 1
cups shortening 1 pinch salt 3 eggs 2
tsp soda 2
/> tsp cream of tartar 1
tsp vanillaCream sugars and shortening. Beat in remaining ingredients. Add flour to stiffen like regular cookie dough. Roll into balls, then flatten with a fork. Cook until brown.Find the amount of cream of tartar needed if you take 
times the recipe.
A. Estimate: 6 tsp
Exact: 3
tsp
B. Estimate: 3
tsp
Exact: 6 tsp
C. Estimate: 4 tsp
Exact: 3
tsp
D. Estimate: 4 tsp
Exact: 3
tsp
Refer to the weighted voting system 
and the Banzhaf definition of power. (The five players will be called P1, P2, P3, P4, and P5.)The number of coalitions having exactly four players is
A. 20 B. 5 C. 1 D. 10 E. none of these