For the given functions f and g, find the requested function and state its domain.f(x) = 
; g(x) = 4x - 7Find 
.
A. 
(x) = 
; {x|x ? 0}
B. 
(x) = 
; 
C. 
(x) = 
; {x|x ? 0}
D. 
(x) = 
; 
Answer: B
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Solve the problem.Roberto invested some money at 7%, and then invested $4000 more than twice this amount at 11%. His total annual income from the two investments was $4790. How much was invested at 11%?
A. $30,000 B. $34,000 C. $12,000 D. $3400
Find the area in acres of the property under the given assumptions. Refer to the figure. 
The stream frontage is 664 feet in length and the property line is 2699 feet in length.
A. 9.97 acre B. 29.91 acre C. 39.88 acre D. 19.94 acre
Multiply and write the result in standard form.2i(9 - 7i)
A. 14 + 18i B. 18i - 14i2 C. 18i - 14 D. 18i + 14i2
Determine whether matrix B is the inverse of matrix A by finding the product AB.A = 
, B = 
A. B = A-1 B. B ? A-1