Is f continuous at ?3 ?
No
Mathematics
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Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = ln (5x + 9y)
A. Domain: all points in the xy-plane satisfying 5x + 9y ? 0; range: all real numbers; level curves: lines 
B. Domain: all points in the xy-plane satisfying 5x + 9y > 0; range: all real numbers; level curves: lines 
C. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
D. Domain: all points in the xy-plane satisfying 5x + 9y > 0; range: real numbers z ? 0; level curves: lines 
Mathematics
Add or subtract. Simplify if possible.
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A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Given h(r, s, t, u) = 
, find h(2, 3, 2, 15).
Fill in the blank(s) with the appropriate word(s).
Mathematics
Graph the inequality.y < 2x
A. 
B. 
C. 
D. 
Mathematics