Solve the system of equations using substitution.
A. x = 
, y = 
; x = - 
, y = 0
B. x = - 
, y = 2; x = 1, y = 5
C. x = 
, y = 6; x = - 
, y = -
D. x = 
, y = 
; x = 1, y = 5
Answer: C
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Find the flux of the curl of field F through the shell S.F = -5zi - 4xj - 4yk ; S: r(r, ?) = r cos ?i + r sin ?j + 3rk, 0 ? r ? 3 and 0 ? ? ? 2?
A. 36? B. -36 C. -36? D. 0
Graph the function.Use the graph of f(x) = 3x to obtain the graph of g(x) = 3-x.
A. 
B. 
C. 
D. 
Solve the problem.A box with no top is to be constructed from a piece of cardboard whose width measures x in. and whose length measures 3 in. more than its width. The box is to be formed by cutting squares that measure 2 in. on each side from the four corners, and then folding up the sides. If the volume of the box will be 140 in.3, what are the dimensions of the piece of cardboard?
A. 14 in. by 11 in. B. 19 in. by 16 in. C. 17 in. by 14 in. D. 24 in. by 16 in.
If possible, solve each system by an algebraic method (substitution or addition method). Otherwise, state that the problem has no solution or an infinite number of solutions. y - 3x = 43y = 9x + 12
A. Infinite number of solutions B. (-1.5, -1) C. No solution D. (1, 1)