Find the area of the region specified in polar coordinates.The region enclosed by the curve r = 10 cos 3?
A. 
?
B. 25?
C. 
?
D. 50?
Answer: B
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Write the fraction as a decimal. Round to the nearest thousandth if necessary.1
A. 1.035 B. 1.350 C. 35.000 D. 0.350
Parametric equations and and a parameter interval for the motion of a particle in the xy-plane are given. Identify the particle's path by finding a Cartesian equation for it. Graph the Cartesian equation. Indicate the portion of the graph traced by the particle and the direction of motion.x = 25t2, y = 5t, -? ? t ? ?
A. x = y2
Entire parabola, top to bottom (from first quadrant to origin to fourth quadrant)
B. x = y2
Entire parabola, bottom to top (from fourth quadrant to origin to first quadrant)
C. y = x2
Entire parabola, left to right (from second quadrant to origin to first quadrant)
D. y = x2
Entire parabola, right to left (from first quadrant to origin to second quadrant)
R1 = 3 Kê and R2 = 6 Kê. What is the value of GT?
a. 0.001 S
b. 0.0003 S
c. 0.0005 S
d. 0.000255 S
e. 0.00011 S
Write the phrase as a variable expression. Use x to represent "a number."The product of -23 and the sum of a number and 28
A. -23(x + 28) B. -644x C. -23x + 28 D. -23 + 28x