Solve the problem.Maxwell's theory of electromagnetic waves established that electromagnetism moved through space in waves. Under certain conditions, an equation that Maxwell used to explain the motion of such waves would take the form 
where ? is the angle of incidence of the original wave, ? is the angle of incidence of the wave when reflected, A is the amplitude of the original wave, and B is the amplitude of the wave when reflected. Express 
in terms of sin ?, cos ?, sin ?, and cos ?.
A. 
B. 
C. 
D. 
Answer: D
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Solve the problem.Roberto invested some money at 6%, and then invested $3000 more than twice this amount at 10%. His total annual income from the two investments was $3160. How much was invested at 10%?
A. $2500 B. $22,000 C. $25,000 D. $9000
Identify the polynomial as a monomial, binomial, trinomial, or none of these.14x
A. None of these B. Binomial C. Monomial D. Trinomial
Find the range for the data set.11, 12, 13, 14, 15
A. 13 B. 4 C. 11 D. 15
Solve the problem.The motion of a projectile that is fired at a 60° angle with the horizontal is given by x = 
t, 
for t in 
Suppose a projectile is fired with an initial velocity of 300 feet per second at an angle of 60° with the horizontal. Find (a) the time when it reaches maximum altitude (b) the maximum altitude.
A. (a) 4.7 sec (b) 352 ft B. (a) 32.5 sec (b) 6328 ft C. (a) 8.1 sec (b) 1055 ft D. (a) 16.2 sec (b) 2436 ft