Graph the function.f(x) = 2e- x
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Calculate the circulation of the field F around the closed curve C.F = xy2i + x2yj; curve C is the counterclockwise path around C1 ? C2 : C1: 
0 ? t ? ?C2: r(t) = ti , -8 ? t ? 8
A. 128 B. 64 C. 0 D. 8
Mathematics
Solve the problem. Round to the nearest cent.Joan wants to have $250,000 when she retires in 25 years. How much should she invest annually in her annuity to do this if the interest is 7% compounded annually?
A. $8998.99 B. $3952.63 C. $7010.57 D. $3000.71
Mathematics
For the following triangle, calculate the indicated trigonometric ratio of the given angle. Do not use the trigonometric function keys on your calculator. (Round to the nearest hundredth.)
A. -0.86 B. 2.36 C. 0.39 D. 0.92
Mathematics
Simplify the expression.25-1/2
A. -5
B. 
C. 5
D. - 
Mathematics