Suppose that you have $6,000 to invest, and you invest x dollars at 10% and the remainder at 8%. Choose the expression that represents the amount invested at 8%.
A. 
B. 
C. 
D. 
E. 
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) = 9x2 - 4y2
A. Domain: all points in the xy-plane; range: all real numbers; level curves: ellipses 
B. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: ellipses 
C. Domain: all points in the first quadrant of the xy-plane; range: all real numbers; level curves: hyperbolas 
D. Domain: all points in the xy-plane; range: all real numbers; level curves: hyperbolas 
Solve the problem.Suppose pumpkin pickers are paid as follows:1-200 pumpkins picked$0.14 each201-350 pumpkins picked$0.18 each350 or more pumpkins picked$0.21 eachIf Nicole picks 267 pumpkins, what are her gross earnings?
A. $42.07 B. $37.38 C. $40.06 D. $48.06
Solve the exponential equation. Round to three decimal places when necessary.e-x = 42x
A. No solution B. 4 C. 0.693 D. 0
Find the indicated angle.Find the complement of 146°.
A. Not possible B. 146° C. 56° D. 34°