Use two equations in two variables to solve the following problem.The salaries of the president and vice president of the United States total $490,000 a year. If the President makes $210,000 more than the Vice president, find each of their salaries.
A. President: $280,000, Vice president: $112,000
B. President: $350,000, Vice president: $140,000
C. President: $420,000, Vice president: $168,000
D. President: $315,000, Vice president: $126,000
Answer: B
Mathematics
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Evaluate the integral by making a substitution and then using a table of integrals.
A. ln 
+ sin t + C
B. ln 
- sin t + C
C. ln 
- sin t + C
D. ln 
+ cos t + C
Mathematics
Verify that each equation is an identity.
= 
What will be an ideal response?
Mathematics
Show that f and g are inverses of each other by verifying that f(g(x)) = x = g(f(x)).
; 
What will be an ideal response?
Mathematics
Solve.9x2 + 16y2 = 144y - x = 3
A. 
, (2, 5)
B. 
, (3, 6)
C. 
, (3, 0)
D. 
, (0, 3)
Mathematics