Evaluate the square root and approximate to two decimal places if necessary.- 
A. 24.5
B. - 14
C. - 7
D. -24.5
Answer: C
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Calculate the flux of the field F across the closed plane curve C.F = e5xi + e2yj; the curve C is the closed counterclockwise path around the triangle with vertices at 
and 
A. 3e5( e-1 - 1) + 
(1 - e6) - 4
B. 3e5(1 - e-1) + 
(e6 - 1) + 4
C. 0
D. 
e5(1 - e-5) + 
(e6 - 1) - 4
Use a truth table to determine whether the symbolic form of the argument is valid or invalid.~ p ? qq ? r----? p ? r
A. 
Symbolic argument is invalid.
B. 
Symbolic argument is valid.
C. 
Symbolic argument is invalid.
D. 
Symbolic argument is valid.
Write the phrase as a mathematical expression. Use x as the variable.397 divided by some number
A. 397 + x
B. 397 - x
C. 397x
D. 
Solve the problem.A grain dealer sold to one customer 5 bushels of wheat, 2 of corn, and 3 of rye, for $26.80; to another, 2 of wheat, 3 of corn, and 5 of rye, for $28.30; and to a third, 3 of wheat, 5 of corn, and 2 of rye, for $29.60. What was the price per bushel for corn?
A. $3.42 B. $1.70 C. $4.00 D. $1.20