Estimate the product or quotient by first rounding each decimal to the indicated place value.2.7 × 4.76
round each to the nearest one
A. 0.8
B. 1.5
C. 15
D. 8
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 = 
y = -1
A. Since limx?-1+ f '(x) = 0 while limx?-1- f '(x) = 1, f(x) is not differentiable at 
B. Since limx?-1+ f '(x) = -1 while limx?-1- f '(x) = 0, f(x) is not differentiable at 
C. Since limx?-1+ f '(x) = 0 while limx?-1- f '(x) = -1, f(x) is not differentiable at 
D. Since limx?-1+ f '(x) = 0 while limx?-1- f '(x) = 0, f(x) is differentiable at 
Solve the variation problem.The distance that an object falls when it is dropped is directly proportional to the square of the amount of time since it was dropped. An object falls 512 feet in 4 seconds. Find the distance the object falls in 
A. 640 feet B. 160 feet C. 20 feet D. 800 feet
Solve the equation.3(1 + 2x) = 243
A. {-2} B. {6} C. {2} D. {81}
Use the differential to find a decimal approximation of the radical expression. Round to four decimal places.
A. 4.0000 B. 4.5000 C. 5.5000 D. 0.0000