Determine whether the given number is approximate or exact.Susan's new car gets 16 miles per gallon of gasoline.
A. Exact
B. Approximate
Answer: B
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Divide and simplify.
÷ 
A. 
B. 
C. 
D. 
Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = 4x + 6y
A. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
c > 0
B. Domain: all points in the xy-plane; range: real numbers z ? 0 ; level curves: lines 
c ? 0
C. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: lines 
c ? 0
D. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
Find an equation of the line that contains the given point and is perpendicular to the given line. If possible, write your equation in slope-intercept form.(2, -2), y = 
x + 2
A. y = - 
x - 
B. y = - 5x - 8
C. y = 5x - 8
D. y = - 5x + 8
Solve the equation and state the solution set.
- 
= 
A. {38}
B. {19}
C. {-19}
D. {
}