Factor the trinomial completely. If the polynomial cannot be factored, write "prime."5x2y + 5xy - 25y
A. 5(x + 5y)(x - 1)
B. 5y(x + 5)(x - 1)
C. 5y(x2 + x - 5)
D. y(5x2 + 5x - 25)
Answer: C
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Describe the curve represented by the equation. Identify the type of curve and its center (or vertex if it is a parabola).
- 
= 1
A. Hyperbola, (1, 5) B. Ellipse, (1, 5) C. Hyperbola, (5, 1) D. Parabola, (5, 1)
Use the power-reducing identities to rewrite the expression that does not contain trigonometric functions of power greater than 1.sin4 x - cos4 x
A. sin 2x B. cos x C. cos 2x D. - cos 2x
Solve.If you are traveling 70 miles per hour on a highway in Canada, how fast are you traveling in kilometers per hour? (Use k = 1.61r, where r = rate in miles per hour and k = rate in kilometers per hour.)
A. 105.7 km/hr B. 71.6 km/hr C. 112.7 km/hr D. 43.5 km/hr
Find all the first order partial derivatives for the following function.f(x, y, z) = xz
A. 
= z
; 
= 
; 
= x
B. 
= z
; 
= 
; 
= x
C. 
= z
; 
= - 
; 
= x
D. 
= z
; 
= - 
; 
= x