Write as a proportion.48 is to 72 as 6 is to 9.
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Answer: D
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Determine the values of x for which the function is differentiable.y = 
A. All real numbers except -2 and 2 B. All real numbers except 4 C. All real numbers except 2 D. All real numbers
Express the number in decimal notation.8.1 × 105
A. 81,000 B. 8,100,000 C. 405 D. 810,000
Write an equation in slope-intercept form of the line satisfying the given conditions.Perpendicular to the line y = -4x + 2; containing the point (1, 2).
A. y = - 
x + 
B. y = -4x + 
C. y = 4x + 
D. y = 
x + 
Provide an appropriate response.State whether the following situation represents direct variation, inverse variation, or neither, and explain why: The cost of mailing a letter in the United States and the distance that it travels.
What will be an ideal response?