Solve.The distance D that a spring is stretched by a hanging object varies directly as the weight W of the object. If a 11-kg object stretches a spring 85 cm, find the distance when the weight is 21-kg. Round your answer to the nearest whole centimeter.
A. 3 cm
B. 162 cm
C. 8 cm
D. 117 cm
Answer: B
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Find the inverse of the function.f(x) = 
, x ? 7
A. f-1(x) = x2 - 7, x ? 0 B. f-1(x) = x + 7, x ? 0 C. Not a one-to-one function D. f-1(x) = x2 + 7, x ? 0
Write the whole number in standard form.Ten million, three hundred fifty-four thousand, two hundred three
A. 1,354,203 B. 135,423 C. 10,354,203 D. 1,354,230
Provide an appropriate response.To graph 
on a graphics calculator, we must consider the union of the graphs of the two functions. 
and 
. Using the graph of 
, explain (a) how the solution set of 
can be determined
graphically and (b) how it relates to the domain of the hyperbola.
What will be an ideal response?
For the polynomial, list each real zero and its multiplicity. Determine whether the graph crosses or touches the x-axis at each x -intercept.f(x) = 
x2(x2 - 5)(x + 7)
A. 0, multiplicity 2, crosses x-axis;
-7, multiplicity 1, touches x-axis;
, multiplicity 1, touches x-axis;
-
, multiplicity 1, touches x-axis
B. 0, multiplicity 2, crosses x-axis;
-7, multiplicity 1, touches x-axis
C. 0, multiplicity 2, touches x-axis;
-7, multiplicity 1, crosses x-axis;
, multiplicity 1, crosses x-axis;
-
, multiplicity 1, crosses x-axis
D. 0, multiplicity 2, touches x-axis;
-7, multiplicity 1, crosses x-axis