Use polar coordinates to find the limit of the function as (x, y) approaches (0, 0).f(x, y) = 
A. 2
B. 0
C. 1
D. No limit
Answer: B
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Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = -3x + 9y
A. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
c > 0
B. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: lines 
c ? 0
C. Domain: all points in the xy-plane; range: real numbers z ? 0 ; level curves: lines 
c ? 0
D. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
Find the infinite sum accurate to 3 decimal places.
A. 0.972 B. 1.036 C. -1.036 D. -0.972
Use the MACRS depreciation rates table to solve the problem. Round to the nearest dollar.MACRS Depreciation Rates 
NewAge Consulting purchased a desktop publishing system (5-year property) at a cost of $9600. Find the accumulated depreciation at the end of 3 years.
A. $7941 B. $5402 C. $6835 D. $8889
Solve.You deposited $4,000 in an account that pays 12% annual interest compounded continuously. Write the equation to determine the amount, A, you will have in t years. How much will you have in 5 years?
A. A = 4,000et; $593,652.61 B. A = 4,000(1.01)12t; $7,266.79 C. A = 4,000e0.12; $4,509.99 D. A = 4,000e0.12t; $7,288.48