A system of nonlinear equations is given. Sketch the graph of the equation of the system and then determine the number of real solutions to the system. Do not solve the system.x2 + y2 = 49x2 + y2 = 4
A. Zero
B. Two
C. Two
D. Two
Answer: A
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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 
Provide an appropriate response. A parallelogram measures 22 cm by 15 cm with a height of 12 cm. If the length is decreased to 20 cm, what would the dimensions be to maintain the area?
A. height,13.2 cm; width, 16.5 cm B. height, -8 cm; width, +76 cm C. height, 16.5 cm: width 14.d cm D. height, 16.5 cm; width 13.2 cm
Simplify the expression. Write your answer without negative exponents. Whenever an exponent is negative or zero, assume that the base is not zero.
A. x1
B. x11
C. x3
D. 
Write the ratio as a fraction in lowest terms.24 cents to 57 cents
A. 
B. 
C. 
D. 