Compute the gradient of the function at the given point.
A. -2i + 6j
B. 6i - 30j
C. 6i + 30j
D. -3i + 5j
Answer: D
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Use the rules for exponents to rewrite the expression and then evaluate the new expression. 
A. -14 B. -5 C. 0 D. 1
Find the area enclosed by the given curves.y = 
x2, y = -x2 + 6
A. 16 B. 8 C. 4 D. 32
Multiply.6.86 × 0.1
A. 0.686 B. 0.00686 C. 0.0686 D. 68.6
Complete the table and use it to calculate the indicated relative frequency. Round your answer to three decimal places if necessary.The following table displays the age, in years, and sex for the residents of a retirement home.Age (years)?60-69 70-79 Over 79 Total Male5? 5 5? Female15?6? 4? Total????What is the relative frequency for persons in the age group 60-69?
A. 0.5 B. 0.667 C. 0.25 D. 0.333