Solve.If the sides of a square are increased by 2 meters, the area becomes 49 square meters. Find the length of a side of the original square.
A. 9 m
B. 7 m
C. 5 m
D. 2 m
Answer: C
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Describe the graph of the polar equation. 2r cos ? + r sin ? = 4
A. Vertical line passing through (2, 0) B. Line with slope 4 and y-intercept (0, 2) C. Parabola with vertex (2, 4) opening upward D. Line with slope -2 and y-intercept (0, 4)
Use the limit definition of the partial derivative to compute the indicated partial derivative of the function at the specified point.Find 
at the point (-8, 5, 10): f(x, y, z) = xyz - 4y2 - 3z
What will be an ideal response?
The following table shows the value V, in dollars, of a stamp collection after t years. t 0 1 2 3 V $323.00 $345.61 $369.80 $395.69? A: Make a table of successive ratios to show that the value of the stamp collection can be modeled by an exponential function. Round your answer to two decimal places.B: Find an exponential model for the data. Round your answer to two decimal places.C: Plot the graph of the data points along with the exponential model. Include up to 10 years.D: According to the model, what is the percentage increase in the value of the collection over a 4.00-year period? Round your answer to two decimal places.
What will be an ideal response?
Simplify the expression. Assume that all variables are positive when they appear.
A. -28
B. - 
C. -9
D. - 