Find the coordinates of the vertex for the parabola defined by the given quadratic function.f(x) = (x + 4)2 + 9
A. (-4, 9)
B. (9, -4)
C. (-9, 4)
D. (9, -16)
Answer: A
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Find the total area of the region between the curve and the x-axis.y = 2x + 7; 1 ? x ? 5
A. 9 B. 52 C. 26 D. 18
Match the situation to the graph that models it best.The remaining hours y that a battery will work after it has been used for x hours
A. 
B. 
C. 
D. 
The ? shape in the figure below is shown using 9 pixels in a 3 × 3 grid. The color levels are given to the right of the figure. Use the matrix 
that represents a digital photograph of the ? shape to solve the problem.
Adjust the contrast by leaving the black alone and changing the light grey to dark grey. Use matrix addition to accomplish this.
A. 
+ 
= 
B. 
+ 
= 
C. 
+ 
= 
D. 
+ 
= 
Solve the problem.A company makes three chocolate candies: cherry, almond, and raisin. Matrix A gives the amount of ingredients in one batch. Matrix B gives the costs of ingredients from suppliers X and Y. What is the cost of 100 batches of each candy using ingredients from supplier X?
A. $6600 B. $3300 C. $7800 D. $4800