Solve.A researcher measured the weights of three substances in a laboratory: Substance A (18.01 g), Substance B (17.9 g), and Substance C (18.1 g). Which substance was the heaviest?
A. Substance C
B. Not enough information
C. Substance B
D. Substance A
Answer: A
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You put a drink in the freezer for a while. You take the drink out, but being forgetful, you leave the drink sitting on the kitchen table. The temperature D, in degrees, of the drink 
minutes after it is put in the freezer is given by
.
A: Make a graph of D versus t for up to one hour after the drink is placed in the freezer.B: During what period was the temperature of the drink less than 32 degrees?
What will be an ideal response?
Find the values of the variables.
= 
A. x = 
, y = 4
B. x = 5, y = 5
C. x = 3, y = 
D. x = 3, y = 4
Graph the parabola and label the vertex. Find the y-intercept.y = 
x2 + 8
A. vertex (0, 8), y-intercept (0, 8)
B. vertex (0, -8), y-intercept (0, -8)
C. vertex (0, 8), y-intercept (0, 8)
D. vertex (0, -8), y-intercept (0, -8)
Use the square root property to solve the quadratic equation.x2 - 7 = 0
A. ± 7
B. ± 
C. No real solution
D. 