Find an equation for the tangent to the curve at the given point.y = x2 + 3, (2, 7)
A. y = 4x - 1
B. y = 4x - 5
C. y = 4x - 2
D. y = 2x - 1
Answer: A
Mathematics
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Factor the difference of squares.81pm4 - 81pn4
A. 81(m2p + n2)(mp + n)(mp - n) B. 81p(m2 + n2)(m + n)(m - n) C. p(9m2 + n2)(9m + n)(9m - n) D. 81p(m2 - n2)2
Mathematics
Find a rectangular equation for the plane curve defined by the parametric equations.x = 4 sin t, y = 4 cos t; 0 ? t ? 2?
A. y = 
= 16; for x in -? < x < ?
B. x2 + y2 = 16; for x in -4 ? x ? 4
C. y = x2 - 9; for x in -2 ? x ? 2
D. y2 - x2 = 16; for x in -? < x < ?
Mathematics
Find an equation of the line described. Through (9, 5), parallel to the y-axis
A. x = 9 B. x = 5 C. y = 5x D. y = 9
Mathematics
Change the common fraction to a decimal.
A. 0.34 B. 1.74 C. 0.54 D. 0.24 E. 4
Mathematics