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| Question 1 of 205.0/ 5.0 PointsYou have 332 feet of fencing to enclose a rectangular region. What is the maximum area?A. 6889 square feet B. 6885 square feet C. 110,224 square feet D. 27,556 square feet |
| Question 2 of 200.0/ 5.0 Pointsx varies inversely as y2, and x = 4 when y = 10. Find x when y = 2.A. x = 16 B. x = 5 C. x = 80 D. x = 100 |
| Question 3 of 205.0/ 5.0 PointsSuppose that a polynomial function is used to model the data shown in the graph below. For what intervals is the function decreasing? A. 10 through 25 and 40 through 45 B. 10 through 25 and 40 through 50 C. 0 through 10 and 25 through 40 D. 10 through 50 |
| Question 4 of 200.0/ 5.0 Pointsx varies inversely as v, and x = 48 when v = 8. Find x when v = 64.A. x = 6 B. x = 64 C. x = 8 D. x = 48 |
| Question 5 of 200.0/ 5.0 PointsThe graph of a quadratic function is given. Determine the function’s equation. A. j(x) = -x2 + 1 B. f(x) = -x2 – 2x – 1 C. h(x) = -x2 – 1 D. g(x) = -x2 + 2x + 1 |
| Question 6 of 205.0/ 5.0 PointsA rain gutter is made from sheets of aluminum that are 18 inches wide by turning up the edges to form right angles. Determine the depth of the gutter that will maximize its cross-sectional area and allow the greatest amount of water to flow.A. 5 inches B. 4 inches C. 4.5 inches D. 5.5 inches |
| Question 7 of 200.0/ 5.0 PointsFind the indicated intercept(s) of the graph of the function. x-intercepts of f(x) = A. (-7, 0) B. C. (7, 0) D. none |
| Question 8 of 200.0/ 5.0 PointsSolve the polynomial inequality and graph the solution set on a number line. Express the solution set in interval notation. x2- 4x – 12 ≤ 0A. [6, ∞) B. (-∞, -2] C. (-∞, -2] [6, ∞) D. [-2, 6] |
| Question 9 of 200.0/ 5.0 PointsFind a rational zero of the polynomial function and use it to find all the zeros of the function. f(x) = x4 + 3×3 – 5×2- 9x – 2A. {1, -2, -2 + , -2 – } B. {-1, -2, -2 + , -2 – } C. {-1, 3, -2 + , -2 – } D. {-1, 2, -2 + , -2 – } |
| Question 10 of 200.0/ 5.0 PointsFind the y-intercept for the graph of the quadratic function. y + 4 = (x + 2)2A. (0, 4) B. (0, 0) C. (4, 0) D. (0, -4) |
| Question 11 of 205.0/ 5.0 PointsFind the zeros of the polynomial function. f(x) = x3 + 5×2- 4x – 20A. x = -5, x = 4 B. x = -2, x = 2 C. x = -5, x = -2, x = 2 D. x = 5, x = -2, x = 2 |
| Question 12 of 200.0/ 5.0 PointsUse the Rational Zero Theorem to list all possible rational zeros for the given function. f(x) = -2×3 + 4×2- 2x + 8A. ± , ± , ± , ± 1, ± 2, ± 4, ± 8 B. ± , ± 1, ± 2, ± 4, ± 8 C. ± , ± , ± 1, ± 2, ± 4, ± 8 D. ± , ± 1, ± 2, ± 4 |
| Question 13 of 205.0/ 5.0 PointsWhile traveling at a constant speed in a car, the centrifugal acceleration passengers feel while the car is turning is inversely proportional to the radius of the turn. If the passengers feel an acceleration of 10 feet per second per second when the radius of the turn is 70 feet, find the acceleration the passengers feel when the radius of the turn is 140 feet.A. 8 feet per second per second B. 6 feet per second per second C. 7 feet per second per second D. 5 feet per second per second |
| Question 14 of 200.0/ 5.0 PointsFind the vertical asymptotes, if any, of the graph of the rational function. f(x) = A. x = 1 B. x = -1 C. x = -1, x = 1 D. no vertical asymptote |
| Question 15 of 200.0/ 5.0 PointsSolve the polynomial inequality and graph the solution set on a number line. Express the solution set in interval notation. (2x + 1)(3x – 4) > 0A. B. C. D. |
| Question 16 of 200.0/ 5.0 PointsFind the vertical asymptotes, if any, of the graph of the rational function. f(x) = A. x = 4 and x = 4 B. x = 4 C. x = 0 and x = 4 D. no vertical asymptote |
| Question 17 of 205.0/ 5.0 PointsIf the force acting on an object stays the same, then the acceleration of the object is inversely proportional to its mass. If an object with a mass of 9 kilograms accelerates at a rate of per second per second by a force, find the rate of acceleration of an object with a mass of that is pulled by the same force.A. 3 meters per second per second B. 27 meters per second per second C. 18 meters per second per second D. 24 meters per second per second |
| Question 18 of 200.0/ 5.0 PointsAdd or subtract as indicated and write the result in standard form. 5i – (-5 – i)A. -5 + 4i B. -5 – 6i C. 5 + 6i D. 5 – 4i |
| Question 19 of 200.0/ 5.0 PointsFind the range of the quadratic function. f(x) = (x + 8)2- 7A. [-7, ∞) B. (-∞, -8] C. [-8, ∞) D. (-∞, -7] |
| Question 20 of 205.0/ 5.0 PointsDetermine whether the function is a polynomial function. f(x) = – x2+ 3A. No B. Yes |
