Graph the system of inequalities.x + 2y ? 2 x + y ? 0
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Solve the problem by writing an appropriate system of equations and using the inverse of the coefficient matrix to solve the system.The sum of three numbers is 5. The sum of the first and second numbers is 3, and the first number is one more than three times the third number. How many of the numbers are even numbers?
A. 2 B. 1 C. None D. 3
Mathematics
Find the derivative of the function.f(t) = (6 - t)(6 + t3)-1
A. f '(t) = 
B. f '(t) = 
C. f '(t) = 
D. f '(t) = 
Mathematics
Solve. Round to the nearest percent if necessary.A company increased the number of its employees from 20 to 26. What was the percent of increase?
A. 6% B. 130% C. 23% D. 30%
Mathematics
Graph the hyperbola.9x2 = 4y2 + 36
A. 
B. 
C. 
D. 
Mathematics