Without graphing the function, determine its amplitude or period as requested.y = 4 cos xFind the period.
A. 
B. ?
C. 4
D. 2?
Answer: D
Mathematics
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Graph the ellipse.
+ 
= 1
A. 
B. 
C. 
D. 
Mathematics
Write an equation for the ellipse.Foci (0, ±4
) and y-intercepts (0, ±9)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Solve.Sandra scored 81 points in 11 games of the basketball season. Find her average points per game. (Round to the nearest whole number, if necessary.)
A. 891 points/game B. 8 points/game C. 892 points/game D. 7 points/game
Mathematics
Provide an appropriate response.Decide if the system has one solution, no solution, or an infinite number of solutions.2x - 4y = 2 y = 
x - 
A. One B. No solution C. Infinite number
Mathematics