Evaluate the expression without using a calculator.log7 
A. -7
B. 1
C. -1
D. 7
Answer: C
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Compare the right-hand and left-hand derivatives to determine whether or not the function is differentiable at the point whose coordinates are given.
? y = x2 y = 
A. Since limx?1+ f '(x) = 
while limx?1- f '(x) = 2, f(x) is not differentiable at 
B. Since limx?1+ f '(x) = 
while limx?1- f '(x) = 1, f(x) is not differentiable at 
C. Since limx?1+ f '(x) = 2 while limx?1- f '(x) = 
, f(x) is not differentiable at 
D. Since limx?1+ f '(x) = 2 while limx?1- f '(x) = 2, f(x) is differentiable at 
Find the cubic or quartic function that models the data in the table.
(Cubic)
A. y = -1.53x3 + 0.54x2 - 2.07x + 0.36 B. y = -1.53x3 + 0.24x2 - 2.57x + 0.36 C. y = -1.53x3 + 0.24x2 - 2.07x + 0.36 D. y = -1.83x3 + 0.24x2 - 2.07x + 0.36
Solve and check.a + 8 = 14
A. -22 B. -6 C. 6 D. 22
Write the equation in polar coordinates.
?
What will be an ideal response?