Solve the problem.Elissa wants to set up a rectangular dog run in her backyard. She has 24 feet of fencing to work with and wants to use it all. If the dog run is to be x feet long, express the area of the dog run as a function of x.
A. A = 12x - x2
B. A = 11x - x2
C. A = 14x2 - x
D. A = 13x - x2
Answer: A
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Find a positive value of the given variable so that the trinomial is factorable.7x2 + 9x + c; c = ?
A. 10 B. 3 C. 9 D. 2
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) = 
A. 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
B. f(x): D = 
, R = 
;
f-1(x): D = 
, R = 
C. f(x): D = 
, R = 
;
f-1(x): D = 
, R = 
D. f(x): D = 
, R = 
;
f-1(x): D = 
, R = 
Subtract the polynomials.(6x9 + 6x8 - 9x7 + 9) - (9x9 + 7x7 - 1)
A. 15x9 + 6x8 - 2x7 + 8 B. 15x9 + 6x8 - 2x7 + 10 C. -3x9 + 6x8 - 2x7 + 8 D. -3x9 + 6x8 - 16x7 + 10
Tell whether the relation is a function.{(-1, 9), (2, 6), (4, -1), (8, -6), (11, 1)}
A. Function B. Not a function