Which of the following was NOT identified by Friel, Curcio, and Bright (2001) as one of the four main factors that influence graph comprehension?
a. Learning syles
b. Purposes for using graphs
c. Task characteristics
d. Student characteristics
Ans: a
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Solve the problem.The cost for labor associated with fixing a washing machine is computed as follows: There is a fixed charge of $30 for the repairman to come to the house, to which a charge of $26 per hour is added. Find an equation that can be used to determine the labor cost, C(x), of a repair that takes x hours.
A. C(x) = 30 - 26x B. C(x) = 26 + 30x C. C(x) = 30 + 26x D. C(x) = ( 30 + 26) x
An objective function and a system of linear inequalities representing constraints are given. Graph the system of inequalities representing the constraints. Find the value of the objective function at each corner of the graphed region. Use these values to determine the maximum value of the objective function and the values of x and y for which the maximum occurs.Objective Functionz = 19x + 15yConstraints0 ? x ? 10 0 ? y ? 5 3x + 2y ? 6
A. maximum: 75; at (0, 5) B. maximum: 190; at (10, 0) C. maximum: 45; at (0, 3) D. maximum: 265; at (10, 5)
Graph the equation.x = (y + 2)2 - 4
A. 
B. 
C. 
D. 
Select the more reasonable temperature for the item.A cold winter day in Montreal, Canada 28°C 28°F
A. 28°F B. 28°C