The inverse of the coefficient matrix is given for the system of equations. Use the inverse matrix to solve the system.
; A-1 = - 
A. 
B. 
C. 
D. 
Answer: D
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Divide and simplify.
÷ 
A. 
B. 
C. 
D. 
Determine the real zeros of the polynomial and their multiplicities. Then decide whether the graph touches or crosses the x-axis at each zero.f(x) = 5(x - 1)(x + 6)4
A. 1, multiplicity 1, crosses x-axis; -6, multiplicity 4, touches x-axis B. -1, multiplicity 1, crosses x-axis; 6, multiplicity 4, touches x-axis C. -1, multiplicity 1, touches x-axis; 6, multiplicity 4, crosses x-axis D. 1, multiplicity 1, touches x-axis; -6, multiplicity 4, crosses x-axis
Determine i) the domain of the function, ii) the range of the function, iii) the domain of the inverse, and iv) the range of the inverse.f(x) = -7x - 6
A. f(x): D = {x|x > -7}, R = {y|y > -6}; f-1(x): D = {x|x < -7}, R = {y|y < -6} B. f(x): D is all real numbers, R is all real numbers; f-1(x): D is all real numbers, R is all real numbers C. f(x): D is all real numbers, R = {y|y > -6}; f-1(x): D is all real numbers, R = {y|y < -6} D. f(x): D = {x|x > -7}, R is all real numbers; f-1(x): D = {x|x < -7}, R is all real numbers
Use the compound interest formula to determine the future value of the given principal P.$480 at 7% compounded quarterly for 3 years
A. $588.02 B. $591.09 C. $111.09 D. $580.92