Determine whether B is the inverse of A.A = 
, B = 
A. Yes
B. No
Answer: A
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Use implicit differentiation to find the specified derivative at the given point.Find 
at the point (1, -1) for -6xy2 - 4x2y - 7x = 0.
A. - 
B. - 
C. 
D. 
Solve the problem.A savings bond currently worth $7600 collects 5.5% annual simple interest each year. If the bond was purchased seven years ago, how much was it bought for?
A. $4903.23 B. $1381.81 C. $5487.36 D. $11,780.00 E. $2673.21
Write the number as a product of a real number and i. Simplify the radical expression.
A. 3i
B. -3
C. 3
D. -3i
Beams of light parallel to the axis of the parabolic mirror shown in the figure strike the mirror and are reflected. Find the distance from the vertex to the point where the beams concentrate.
?
a = 12 ft, b = 8 ft
?
?
A. The focus is 32 in. from the vertex on the axis of the parabola. B. The focus is 16 in. from the vertex on the axis of the parabola. C. The focus is 12 in. from the vertex on the axis of the parabola. D. The focus is 8 in. from the vertex on the axis of the parabola.