Determine whether the lines are parallel, perpendicular, or neither: The line through (3,3) and (4,4); the line through (0, -9) and (-1, -8).
a. Neither
b. Perpendicular
c. Parallel
d. Parallel and perpendicular
b. Perpendicular
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Solve the problem.If the curve z = x2 in the xz-plane is revolved about the z-axis, the resulting surface has equation z = x2 + y2, obtained as a result of replacing x by 
. If y = 6x2 in the xy-plane is revolved about the y-axis, what is the equation of the resulting surface?
A. y = 6x2 - 6z2 B. y = 6x2 + 6y2 C. y = 6x2 + 6z2 D. y = x2 + z2
Subtract in the indicated base. 
A. 1011two B. 1111two C. 101two D. 111two
Solve the problem.The following graph
A. has a single Hamilton circuit (and its mirror-image circuit). B. has no Hamilton circuit. C. has several Hamilton circuits, none of which contain the edge BC. D. has several Hamilton circuits, all of which contain the edge AD. E. none of these
Solve.The daily profit in dollars of a specialty cake shop is described by the function P
where x is the number of cakes prepared in one day. Find P(40).
A. P(40) = 18,840 B. P(40) = -360 C. P(40) = 4200 D. P(40) = -23,400