Factor the polynomial by substitution.36z8 + 21z5 - 36z2
A. 3z2(3z3 - 4)(4z3 + 3)
B. (4z4 + 4)(3z4 + 4)
C. 3(4z6 - 3)(3z2 + 4)
D. 3z2(4z3 - 3)(3z3 + 4)
Answer: D
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Find the domain and range of the inverse of the given function.f(x) = 
A. Domain: (-?, 0) ? (0, ?); range: (-?, -4) ? (-4, ?) B. Domain and range: all real numbers C. Domain: all real numbers; range: (-?, -4) ? (-4, ?) D. Domain: (-?, -4) ? (-4, ?) ; range: (-?, 0) ? (0, ?)
Identify the independent variable and the dependent variable.Let r be the rate (in gallons per hour) at which water is added to a tank, and let t be the number of hours it takes to fill the tank.
A. independent: t; dependent, r B. independent: r; dependent, t
Find the first term and the common ratio of the geometric sequence.
, 
, 
, 
, . . .
A. a1 = 
, r = 5
B. a1 = 
, r = 
C. a1 = 
, r = 
D. a1 = 
, r = 
Provide an appropriate response.Find the average value of the function over the shaded region. f(x, y) = 9x + y
A. 
B. 
C. 
D. 