Solve the problem.A kitchen table costs $140. The sales tax is $8.40. What is the sales tax rate and what is the total price paid?
A. 0.6%, $148.40
B. 7%, $148.40
C. 8%, $148.40
D. 6%, $148.40
Answer: D
Mathematics
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Find the flux of the curl of field F through the shell S.F = (3y + 3)i - 2xj + (ez - 3)k; S: r(r, ?) = 5 sin ? cos ?i + 5 sin ? sin ?j + 5 cos ?k, 0 ? ? ? 2? and 0 ? ? ? 
A. 250 B. 125? C. -125? D. -250?
Mathematics
Solve the problem.When twice a number is increased by 2, the result is 48 plus the number . Find the number.
A. 46
B. 
C. 47
D. 44
Mathematics
Graph the ellipse and locate the foci.
+ 
= 1
A. foci at (
, 0) and (-
, 0)
B. foci at (2
, 0) and (-2
, 0)
C. foci at (0, 
) and (0, -
)
D. foci at (
, 0) and (-
, 0)
Mathematics
Decide whether the graph opens up or opens down.f(x) = -x2 - 6x + 3
A. opens up B. opens down
Mathematics