How can you tell from the graph of a quadratic function whether it has no real zeros Choose the correct answer below. O A. The graph of the quadratic function which does not intersect the x-axis has O B. The graph of the quadratic function which does not intersect the y-axis has O C. The graph of the quadratic function which passes through the origin has no

The graph shows a quadratic function of the form R(t) = at2+bt+c, which represents the yearly revenue for a company, where R(t) is the revenue in year t.   a. Is the value of a positive, negative, or zero?  Explain. b. Write an expression in terms of a and b that represents the year t when the company had the least revenue. c. The company made the same yearly revenues in 2008 and 2018.  Estimate the year in which the company had the least revenue. d. Assume that the model is still valid today.  Are the yearly revenues currently increasing, decreasing, or constant?  Explain.

4. A company is told that when manufacturing 201 vehicles, it will minimize its production costs per vehicle to be $3015. If the company only manufactures 2 vehicles, the cost per vehicle is $82,217. Write a quadratic function representing the cost per vehicle C in terms of the number of vehicles manufactured v. Give final answer in Quadratic Form (not Transformation Form). Show work. Function:

Determine the maximum or minimum value for each quadratic relation below. a) y = 2 (x - 5)^2 - 8 b) y = -3 (x + 7)^2 +12