Use the slope-intercept form to graph the equation.3x + y = 0
A. 
B. 
C. 
D. 
Answer: C
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Find the standard-form equation of the ellipse centered at the origin and satisfying the given conditions.An ellipse with vertices (0, ±9) and foci at 
.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Find the unit tangent vector of the given curve.r(t) = (5t cos t - 5 sin t)j + (5t sin t + 5 cos t)k
A. T = (-sin t)j + (cos t)k
B. T = (5 cos t)j - (5 sin t)k
C. T = - 
(sin t)j + 
(cos t)k
D. T = (-5 sin t)j + (5 cos t)k
Evaluate the function for the indicated input and interpret the result.A(12, 22) where A(w,?) = w?. (A computes the area of a rectangle with width w and length ?.)
A. A(12, 22) = 264 The area of a rectangle with width 12 and length 22 is 264. B. A(12, 22) = 132 The area of a rectangle with width 12 and length 22 is 132. C. A(12, 22) = 132 The area of a rectangle with width 22 and length 12 is 132. D. A(12, 22) = 528 The area of a rectangle with width 22 and length 12 is 528.
Write the ratio in three different ways.the ratio of 0.2 to 50
A. 0.2 to 50, 0.2:50, 
B. 0.2 to 50, 0.2;50, 
C. 50 to 0.2, 50:0.2, 
D. 0.2 of 50, 0.2;50, 