Solve the system mentally, without the use of a calculator or pencil-and-paper calculation. Try to visualize the graphs of both lines.x + 0y = 90x + y = 4
A. x = 9; y = 4
B. x = 4; y = 9
C. x = 9; y = 2
D. x = 2; y = 
Answer: A
Mathematics
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Solve the problem by integration.Find the first-quadrant area bounded by 
and x = 2.
A. 4 ln 
B. 2 ln 
C. 4 ln 
D. 4 ln 49
Mathematics
Simplify the expression by combining like terms.- 
+ 5y + 
y - 13 + 
y
A. 
y - 
B. 
+ 6
C. 
y - 6
D. 7y
Mathematics
Solve the problem.Juan earns a weekly salary of $552.00 and is nonexempt from FLSA. Last week he worked 43 hours. What are his gross earnings for the week?
A. $655.50 B. $658.60 C. $614.10 D. $569.60
Mathematics
Write an equivalent fraction with the given denominator. 
= 
A. 
B. 171
C. 1710
D. 9
Mathematics