If $5,000 is deposited at the end of each half year in an account that earns an annual rate of 6.0% compounded semiannually, how long will it be before the account contains $145,000? Round your answer to two decimal places.
?
A. 8.88 half years
B. 53.56 half years
C. 45.78 half years
D. 35.67 half years
E. 21.18 half years
Answer: E
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Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = ex+y
A. Domain: all points in the xy-plane; range: all real numbers; level curves: lines x + y = c B. Domain: all points in the xy-plane; range: real numbers z > 0; level curves: lines x + y = c C. Domain: all points in the first quadrant of the xy-plane; range: all real numbers; level curves: lines x + y = c D. Domain: all points in the first quadrant of the xy-plane; range: real numbers z > 0; level curves: lines x + y = c
Solve the equation for x if 
. Give your answer in radians using exact values only.
?
What will be an ideal response?
Find the product.
A. 
B. 
C. 
D. 
E. 
Solve.When making a telephone call using a calling card, a call lasting 6 minutes cost $2.90. A call lasting 16 minutes cost $6.90. Let y be the cost of making a call lasting x minutes using a calling card. Write a linear equation that relates the cost of a making a call, y, to the time x.
A. y = 0.4x - 9.1
B. y = -0.4x + 5.3
C. y = 
x - 
D. y = 0.4x + 0.5