Find an equation for the graph.
A. y = 2 cos 
B. y = 4 cos (2?x)
C. y = 4 cos 
D. y = 2 cos (4?x)
Answer: C
Mathematics
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Fill in the blank with one of the words or phrases listed below.
A polynomial with exactly 3 terms is called a 
.
A. monomial B. trinomial C. binomial D. FOIL
Mathematics
Write an equation of the line passing through the given points.(3, 15) and (4, 17)
A. y = 
x + 
B. y = - 
x + 
C. y = -2x + 21
D. y = 2x + 9
Mathematics
Solve.6(x + 1) = 27x + 27 - 21x - 21
A. x = 0 B. x = 1 C. Infinite number of solutions D. No solution
Mathematics
Solve the problem.The chairlift at a ski resort has a vertical rise of 2500 feet. If the length of the ride is 1.3 miles, what is the average angle of inclination of the lift (to the nearest tenth of a degree)?
A. 24.4° B. 15.4° C. 18.4° D. 21.4°
Mathematics