Determine whether the equation defines y as a function of x. x2 + 2y2 = 1
A. function
B. not a function
Answer: B
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Solve the problem.Show that the vectors 
b + 
a and 
b - 
a are orthogonal.
What will be an ideal response?
Solve the problem.A drippy faucet wastes 24 oz of water a day. If there are 41 million such drippy faucets, how much water, in gallons, is wasted in a day?
A. 15,375,000 gal/day B. 984 gal/day C. 30,750,000 gal/day D. 7,687,500 gal/day
Express 17 /30è in rectangular form.
a. 14.7 + j8.5 b. 8.5 + j14.7 c. 9.8 + j9.8 d. 17 + j17 e. 8.5 + j8.5
Solve.The MetroCity tractor company is planning to produce a new tractor. For the first year, the fixed costs for setting up production are $400,000. The variable costs for producing each tractor are $15,000. The revenue for each tractor is $30,000. Find the total cost C(x) of producing x tractors.
A. C(x) = 15,000x B. C(x) = 400,000 + 15,000x C. C(x) = 400,000x + 15,000x D. C(x) = 30,000x + 400,000