Collect like terms.2x + 6xy + 5x + 6xy
A. 2x + 12xy + 5
B. 7x + 6xy + 6y
C. 14xy
D. 7x + 12xy
Answer: D
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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 = 3 sin t, y = 2 cos t, 0 ? t ? 2?
A. 
+ 
= 1; Counterclockwise from
(3, 0) to (3, 0), one rotation
B. 
+ 
= 1; Counterclockwise from
(2, 0) to (2, 0), one rotation
C. 
+ 
= 1; Counterclockwise from
(0, 3) to (0, 3), one rotation
D. 
+ 
= 1; Counterclockwise from
(0, 2) to (0, 2), one rotation
Graph the given function as a solid line (or curve) and its inverse as a dashed line (or curve) on the same set of axes.f(x) = -5x + 8
A. 
B. 
C. 
D. 
Match the situation to the graph that models it best. The x-axis represents time.New car prices over the past 40 years
A. 
B. 
C. 
D. 
Decide whether the expression is positive, negative or 0.-88
A. Positive B. 0 C. Negative