Use the function f(x) to answer the questions:

f(x) = 4x2 − 7x − 15

Part A: What are the x-intercepts of the graph of f(x)? Show your work. (2 points)

Part B: Is the vertex of the graph of f(x) going to be a maximum or a minimum? What are the coordinates of the vertex? Justify your answers and show your work. (3 points)

Part C: What are the steps you would use to graph f(x)? Justify that you can use the answers obtained in Part A and Part B to draw the graph. (5 points

A. f(x) = (4x+5)(x-3)

              B. Since +4 > 0, the graph opens up

             as always, the vertex is at x = -b/2a = 7/8

             C. plot the vertex at (7/8, -18 1/16)

           pick a point or two, say at x=0,1,2 and plot them. then draw a curve           through them.

Step-by-step explanation:

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hello :

by applying the distributive property :

6 × 4.3 = 6 × ( 4 + 0.3 )

            =   (6 ×   4) + (6 ×   0.3)

            = 24 + 1.8

6 × 4.3 = 25.8