Solve the given system by Gaussian elimination.
a. ?(3, 4)
b. (–3, 4)
c. (5, 18)
d. (–3, –4)
d. (–3, –4)
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Solve the exponential equation. Use a calculator to obtain a decimal approximation, correct to two decimal places, for the solution.
x = 18
A. {-4.50} B. {2.08} C. {-2.08} D. {-0.48}
Classify the system as independent, inconsistent, or dependent.-5 = 2x + 9y18y + 4x = -11
A. Dependent B. Independent C. Inconsistent
For the rational function below (i) Find the intercepts for the graph; (ii) Determine the domain; (iii) Find any vertical or horizontal asymptotes for the graph; (iv) Sketch any asymptotes as dashed lines. Then sketch the graph of y = f(x).f(x) = 
A. (i) x intercept: - 
; y intercept: - 
(ii) Domain: all real numbers except -2
(iii) Vertical asymptote: x = -2; horizontal asymptote: y = -2
(iv)
B. (i) x intercept: - 
; y intercept: - 
(ii) Domain: all real numbers except -2
(iii) Vertical asymptote: x = -2; horizontal asymptote: y = -2
(iv)
C. (i) x intercept: 
; y intercept: - 
(ii) Domain: all real numbers except 2
(iii) Vertical asymptote: x = 2; horizontal asymptote: y = -2
(iv)
D. (i) x intercept: 
; y intercept: - 
(ii) Domain: all real numbers except 2
(iii) Vertical asymptote: x = 2; horizontal asymptote: y = -2
(iv)
Solve the problem.The expression for finding the area of a square is s2, where s is the length of one side. Evaluate the expression when the length of one side is 9 cm.
A. 729 cm2 B. 81 cm2 C. 9 cm2 D. 18 cm2