Evaluate the expression.Three squared plus nine
A. 84
B. 18
C. 78
D. 9
Answer: B
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Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = (2x - 9y)3
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: all real numbers; level curves: lines 
D. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: lines 
Solve the equation.
- 
= 
A. 
B. -2
C. 2
D. No solution
Use differentiation to determine whether the integral formula is correct.
dx = - 
+ C
A. No B. Yes
A right triangle with acute angle ? is given. Evaluate the indicated trigonometric function of the acute angle ?.Find sin ?.
A. 
B. 
C. 
D. 