Graph the function. Show at least one period.y = 3 cos 
A. 
B. 
C. 
D. 
Answer: A
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Find the coordinates of the midpoint of the line segment joining the points.(3.1, -5.4) and (-6.6, -7.5)
A. (4.85, 1.05) B. (9.7, 2.1) C. (-3.5, -12.9) D. (-1.75, -6.45)
Write the fractions as equivalent fractions with the LCD.
and 
A. 
and 
B. 
and 
C. 
and 
D. 
and 
Solve the problem.The linear function f computes the distance y in miles between a car and the city of Vancouver after x hours, where 
The graphs of f and the horizontal lines 
and 
are shown in the figure. (i) When is the car 90 to 180 miles from Vancouver? (ii) when is the car's distance from Vancouver less than 180 miles. 
A. between 3 and 8 hours after departure; after it has traveled 1 hour B. before it has traveled 7 hours; between 7 and 8 hours after departure C. after it has traveled 1 hour; before it has traveled 7 hours D. between 1 and 7 hours after departure; before it has traveled 7 hours
Simplify.(-9x6y)(-8x6y5)(0)
A. 1 B. 72x12y6 C. 0 D. 72x6y5