Solve the problem.The numerator of a fraction is 5 times the denominator. If 6 is subtracted from the numerator, and added to the denominator, the resulting fraction is equal to 
. What was the original fraction (not written in lowest terms)?.
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem.Find an equation for the level surface of the function f(x, y, z) = 
d? - 
dt that passes through the point (0, ln 3, ln 4) .
A. ey + ez - 
= -1
B. ey - ez + 
= 1
C. ey + ez - 
= 1
D. ey - ez + 
= -1
An equation of the terminal side of an angle ? in standard position is given along with a restriction on x. Find the indicated trigonometric function value of ?. Do not use a calculator.2x + 3y = 0, x ? 0; Find csc ?.
A. 
B. - 
C. 
D. - 
Solve.An airplane is flying west at an altitude of 34,290 feet. Another plane is flying north at an altitude of 30,798 feet. How much above the 
plane is the 
plane when their paths cross?
A. 3692 feet B. 3422 feet C. 3492 feet D. 3462 feet
Factor the polynomial by removing any common monomial factor.48ax9 + 6ax4 - 30ax2
A. 6a(8x9 + x4 - 5x2) B. -ax2(-48x7 + 6x2 + 30) C. ax2(48x7 + 6x2 - 30) D. 6ax2(8x7 + x2 - 5)