10-12) FOIL
First, Outside, Inside, Last
- 2x*3x = 6x^2
- 2x + 3x= 5x
13) Here is an example of a quadratic equation...there is nothing in the (x -h)^2 so h is zero. The constant out there by itself is 5....so that is k. The parabola moves up 5, so the vertex becomes (0,5). Also, because the leading coefficient is 1 it opens up!
14) Square root and k (the constant) is -3 so the pick the graph with the vertex at (0,5)!
15) Multiply 34*630 and add that to (320-34)*267....gross in this problem means the total value of the tickets purchased!
16) This is a difference of two squares (3x + 4)(3x - 4) = 0
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