Use a graphing calculator to graph the function using the given viewing window. Use the graph to decide if the function is one-to-one. If the function is one-to-one, give the equation of the inverse function.f(x) = x4 - 6x2 + 5; [-3, 3] by [-40, 40]
A. not one-to-one
B. one-to-one; f-1(x) =
+ 6x2
C. one-to-one; f-1(x) = 
D. one-to-one; f-1(x) = 
Answer: A
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Solve the system by graphing on a calculator. Round to the nearest hundredth if necessary.x2 + y2 = 13.85x = 3y - 1
A. {(1.47, 3.42), (-0.87, -3.62)} B. {(-11.26, -3.42), (11.06, 4.02)} C. {(-3.41, -1.47), (3.62, 0.87)} D. {(3.42, 1.47), (-3.62, -0.87)}
Translate using numbers and symbols.three times the sum of six and thirteen
A. (3 + 6) ? 13 B. 3 ? 6 + 13 C. 3 ? 6 ? 13 D. 3(6 + 13)
Set the viewing rectangle of your graphing calculator to 
by 
to solve the problem.Find a set of parametric equations evaluated over 0 ? t ? 2? that produces the graph shown.
A.
| x1 = t/?, | y1 = t/? |
| x2 = 2t/?, | y2 = 0 |
| x3 = 2 + t/?, | y3 = 2 - t/? |
B.
| x1 = -1 + t/?, | y1 = -4 + t/? |
| x2 = -1 + 2t/?, | y2 = -4 |
| x3 = 1 + 2t/?, | y3 = -2 - t/? |
C.
| x1 = -1 + t/?, | y1 = -4 + t/? |
| x2 = -1 + t/?, | y2 = -4 |
| x3 = 1 + t/?, | y3 = -2 + t/? |
D.
| x1 = -1 + t/?, | y1 = 1 + 3sin(t) |
| x2 = -1 + 2t/?, | y2 = -4 |
| x3 = -1 + t/?, | y3 = 2 - t/? |
Factor completely. If the polynomial is prime, then state this as your answer.9x2 + 6xy - 8y2
A. (9x + 4y)(x - 2y) B. (3x + 4y)(3x - 2y) C. (3x - 4y)(3x + 2y) D. prime