If f(x) = (2x + 1)(2x + 3), complete the square and determine the minimum or maximum value of the function

Step-by-step explanation:

Use FOIL, first outside inside last

2x × 2x = 4x^2

2x × 3 = 6x

1 × 2x = 2x

1 × 3 = 3

The formula to find the minimum or maximum value is

And remember it's always ax^2 + bx + c

So now just plug in the numbers

-8/8 = -1

If a > 0 then the graph is upwards, in this case 4>0 so it is upwards. And -1 is the vertex, which is the minimum value

b

step-by-step explanation:

u take $75 minus $60.the anwer/original($75)multiply by 100

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step-by-step explanation: