Traci spent $1.19 on a pack of gum and $0.95 on lip balm. Part A
What was the total amount Traci spent? Use the model to help you.

Part B
Select words from the drop-down menus to explain how the model helps find the sum.
The number of full grids shaded is the number of dollars or cents. The number of small squares shaded in the third, first, or second grid is the number of cents or dollars.

if the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.

then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.

one way in which you can find the vertex is to calculate x = -b / (2a).   here, that comes to

        )

x = = 1.   f(1) = 1^2 - 2(1) - 8 = - 9.   vertex is at (1, -9).

        2(1) 

find another point on the curve:   let x=0, for which y=-8.   then (0, -8) is on the curve.   plot the vertex and this point and draw a smooth parabola thru both.

hope this

answer: no

step-by-step explanation: